TO PING OR NOT TO PING?
09-24-2007, 06:04 PM
#81
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
> On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
>
>
>
>
> > He's been in mine since he started his BS in alt.trucks.ford...
>
> > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > I
> > > put him back in my kill file of course.
>
> > > Saludos,
>
> > > Earle
>
> > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > >> Sno,
>
> > >> I, for one, appreciate your knowledge and contribution to the group,
> > > but
> > >> statements like "You would know this if you had any realy knowledge of
> > >> this." and "Of course you would because you are clueless here" are
> > >> irrelevant and worthless.
>
> > >> Carl
>
> > >> "SnoMan" <ad...@snoman.com> wrote in message
> > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > >> > wrote:
>
> > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > >> >>any driving condition.
>
> > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > >> > slower and load is high. You would know this if you had any realy
> > >> > knowledge of this.
>
> > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > >> >>power to accelerate uphill fast even using regular gas.
>
> > >> > All the more reason it can ping because when engine is making good
> > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > >> > pumping pressure are the highest for its mixtures being burned and
> > >> > these higher pressure need more octane
>
> > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > >> > is a great combo, you really do not have a clue what good pulling
> > >> > power is. (you have very low standards)
>
> > >> >>I would be suspecting something else is making the noise.
>
> > >> > Of course you would because you are clueless here
>
> > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > >> >>oranges to a 4.0's systems)
>
> > >> > How much octane you need depends on engine temp, air temp, load,
> > >> > humidity, altitude and well as deposits in engine from age and minute
> > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > >> > and the trick is to use a high enough octane to meet maximum needs.
> > >> > What people need themselves can vary and is not universal 87 does it
> > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > >> > since early 80's.
>
> > >> >>Mike
> > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > >> >>(More Off Road album links at bottom of the view page)
>
> > >> >>Tracie wrote:
> > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > >> >>>> Quick question...
>
> > >> >>>> 2006 TJ
> > >> >>>> 6 speed manual
> > >> >>>> 4.0 liter with I-6
> > >> >>>> 31/10.50/15 BFGs
>
> > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > >> >>>> due
> > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > running
> > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > >> >>>> Any
> > >> >>>> insight?
>
> > >> >>> Sorry but I forgot to add the following....
>
> > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > >> >>> mainly while going uphill (little or big), I get this noise on the
> > >> >>> passenger side that sounds VERY similar to the soft top side window
> > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > >> >>> am not 100% sure whether it's coming from the front or the back.
> > >> >>> It's
> > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > >> >>> so
> > >> >>> I don't know if it will be reduced again once I get to that point. I
> > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > >> >>> this
> > >> >>> be causing the problem too?
>
> > >> > -----------------
> > >> > TheSnoMan.com- Hide quoted text -
>
> > - Show quoted text -
>
> Wouldn't I get the same effect if I had the dealer retard the timing a
> bit?- Hide quoted text -
>
> - Show quoted text -
ULB --
I did take it to the dealer quite a while back, but according to them
it's another one of those "normal" things that a jeep does. They took
a ride out in it with me, and did hear the noise I was referring to.
It very well could be normal since I have heard it since I bought it
new. They told me not to worry that it was completely normal.
Also, I noticed that today after my gas tank got to the 3/4 tank full
mark, the noise I was describing in a previous post that I thought was
pinging completely went away again. Seems to only do it until the
first 1/4 tank of gas is used up. This is the second tank in a row
that it has done this then quit like that. Then it quits. I also
discovered that the 'pinging/tapping' noise I was hearing that sounded
like my side windows flapping on the metal support bow was indeed just
that. The wind was a bit stronger today than it has been the last
couple of days, and it was flapping faintly and heavily -- each time
when the wind was blowing. One down, a couple more to go. : D
> On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
>
>
>
>
> > He's been in mine since he started his BS in alt.trucks.ford...
>
> > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > I
> > > put him back in my kill file of course.
>
> > > Saludos,
>
> > > Earle
>
> > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > >> Sno,
>
> > >> I, for one, appreciate your knowledge and contribution to the group,
> > > but
> > >> statements like "You would know this if you had any realy knowledge of
> > >> this." and "Of course you would because you are clueless here" are
> > >> irrelevant and worthless.
>
> > >> Carl
>
> > >> "SnoMan" <ad...@snoman.com> wrote in message
> > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > >> > wrote:
>
> > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > >> >>any driving condition.
>
> > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > >> > slower and load is high. You would know this if you had any realy
> > >> > knowledge of this.
>
> > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > >> >>power to accelerate uphill fast even using regular gas.
>
> > >> > All the more reason it can ping because when engine is making good
> > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > >> > pumping pressure are the highest for its mixtures being burned and
> > >> > these higher pressure need more octane
>
> > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > >> > is a great combo, you really do not have a clue what good pulling
> > >> > power is. (you have very low standards)
>
> > >> >>I would be suspecting something else is making the noise.
>
> > >> > Of course you would because you are clueless here
>
> > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > >> >>oranges to a 4.0's systems)
>
> > >> > How much octane you need depends on engine temp, air temp, load,
> > >> > humidity, altitude and well as deposits in engine from age and minute
> > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > >> > and the trick is to use a high enough octane to meet maximum needs.
> > >> > What people need themselves can vary and is not universal 87 does it
> > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > >> > since early 80's.
>
> > >> >>Mike
> > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > >> >>(More Off Road album links at bottom of the view page)
>
> > >> >>Tracie wrote:
> > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > >> >>>> Quick question...
>
> > >> >>>> 2006 TJ
> > >> >>>> 6 speed manual
> > >> >>>> 4.0 liter with I-6
> > >> >>>> 31/10.50/15 BFGs
>
> > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > >> >>>> due
> > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > running
> > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > >> >>>> Any
> > >> >>>> insight?
>
> > >> >>> Sorry but I forgot to add the following....
>
> > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > >> >>> mainly while going uphill (little or big), I get this noise on the
> > >> >>> passenger side that sounds VERY similar to the soft top side window
> > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > >> >>> am not 100% sure whether it's coming from the front or the back.
> > >> >>> It's
> > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > >> >>> so
> > >> >>> I don't know if it will be reduced again once I get to that point. I
> > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > >> >>> this
> > >> >>> be causing the problem too?
>
> > >> > -----------------
> > >> > TheSnoMan.com- Hide quoted text -
>
> > - Show quoted text -
>
> Wouldn't I get the same effect if I had the dealer retard the timing a
> bit?- Hide quoted text -
>
> - Show quoted text -
ULB --
I did take it to the dealer quite a while back, but according to them
it's another one of those "normal" things that a jeep does. They took
a ride out in it with me, and did hear the noise I was referring to.
It very well could be normal since I have heard it since I bought it
new. They told me not to worry that it was completely normal.
Also, I noticed that today after my gas tank got to the 3/4 tank full
mark, the noise I was describing in a previous post that I thought was
pinging completely went away again. Seems to only do it until the
first 1/4 tank of gas is used up. This is the second tank in a row
that it has done this then quit like that. Then it quits. I also
discovered that the 'pinging/tapping' noise I was hearing that sounded
like my side windows flapping on the metal support bow was indeed just
that. The wind was a bit stronger today than it has been the last
couple of days, and it was flapping faintly and heavily -- each time
when the wind was blowing. One down, a couple more to go. : D
09-24-2007, 06:07 PM
#82
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
On Sep 24, 6:04 pm, Tracie <brain...@upstate.edu> wrote:
> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>
>
>
>
>
> > On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
> > > He's been in mine since he started his BS in alt.trucks.ford...
>
> > > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> > >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > > I
> > > > put him back in my kill file of course.
>
> > > > Saludos,
>
> > > > Earle
>
> > > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > > >> Sno,
>
> > > >> I, for one, appreciate your knowledge and contribution to the group,
> > > > but
> > > >> statements like "You would know this if you had any realy knowledge of
> > > >> this." and "Of course you would because you are clueless here" are
> > > >> irrelevant and worthless.
>
> > > >> Carl
>
> > > >> "SnoMan" <ad...@snoman.com> wrote in message
> > > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > > >> > wrote:
>
> > > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > > >> >>any driving condition.
>
> > > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > > >> > slower and load is high. You would know this if you had any realy
> > > >> > knowledge of this.
>
> > > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > > >> >>power to accelerate uphill fast even using regular gas.
>
> > > >> > All the more reason it can ping because when engine is making good
> > > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > > >> > pumping pressure are the highest for its mixtures being burned and
> > > >> > these higher pressure need more octane
>
> > > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > > >> > is a great combo, you really do not have a clue what good pulling
> > > >> > power is. (you have very low standards)
>
> > > >> >>I would be suspecting something else is making the noise.
>
> > > >> > Of course you would because you are clueless here
>
> > > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > > >> >>oranges to a 4.0's systems)
>
> > > >> > How much octane you need depends on engine temp, air temp, load,
> > > >> > humidity, altitude and well as deposits in engine from age and minute
> > > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > > >> > and the trick is to use a high enough octane to meet maximum needs.
> > > >> > What people need themselves can vary and is not universal 87 does it
> > > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > > >> > since early 80's.
>
> > > >> >>Mike
> > > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > > >> >>(More Off Road album links at bottom of the view page)
>
> > > >> >>Tracie wrote:
> > > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > > >> >>>> Quick question...
>
> > > >> >>>> 2006 TJ
> > > >> >>>> 6 speed manual
> > > >> >>>> 4.0 liter with I-6
> > > >> >>>> 31/10.50/15 BFGs
>
> > > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > > >> >>>> due
> > > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > > running
> > > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > > >> >>>> Any
> > > >> >>>> insight?
>
> > > >> >>> Sorry but I forgot to add the following....
>
> > > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > > >> >>> mainly while going uphill (little or big), I get this noise on the
> > > >> >>> passenger side that sounds VERY similar to the soft top side window
> > > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > > >> >>> am not 100% sure whether it's coming from the front or the back.
> > > >> >>> It's
> > > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > > >> >>> so
> > > >> >>> I don't know if it will be reduced again once I get to that point. I
> > > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > > >> >>> this
> > > >> >>> be causing the problem too?
>
> > > >> > -----------------
> > > >> > TheSnoMan.com- Hide quoted text -
>
> > > - Show quoted text -
>
> > Wouldn't I get the same effect if I had the dealer retard the timing a
> > bit?- Hide quoted text -
>
> > - Show quoted text -
>
> ULB --
>
> I did take it to the dealer quite a while back, but according to them
> it's another one of those "normal" things that a jeep does. They took
> a ride out in it with me, and did hear the noise I was referring to.
> It very well could be normal since I have heard it since I bought it
> new. They told me not to worry that it was completely normal.
>
> Also, I noticed that today after my gas tank got to the 3/4 tank full
> mark, the noise I was describing in a previous post that I thought was
> pinging completely went away again. Seems to only do it until the
> first 1/4 tank of gas is used up. This is the second tank in a row
> that it has done this then quit like that. Then it quits. I also
> discovered that the 'pinging/tapping' noise I was hearing that sounded
> like my side windows flapping on the metal support bow was indeed just
> that. The wind was a bit stronger today than it has been the last
> couple of days, and it was flapping faintly and heavily -- each time
> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>
> - Show quoted text -
Chris --
Is that faint ticking sound from the injectors a steady and rhythmic
sound? It's not intermittent, correct? If that's what I am hearing,
I bet I am hearing it at highway speeds because I have a soft top, and
there is next to no insulation in it.
> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>
>
>
>
>
> > On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
> > > He's been in mine since he started his BS in alt.trucks.ford...
>
> > > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> > >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > > I
> > > > put him back in my kill file of course.
>
> > > > Saludos,
>
> > > > Earle
>
> > > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > > >> Sno,
>
> > > >> I, for one, appreciate your knowledge and contribution to the group,
> > > > but
> > > >> statements like "You would know this if you had any realy knowledge of
> > > >> this." and "Of course you would because you are clueless here" are
> > > >> irrelevant and worthless.
>
> > > >> Carl
>
> > > >> "SnoMan" <ad...@snoman.com> wrote in message
> > > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > > >> > wrote:
>
> > > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > > >> >>any driving condition.
>
> > > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > > >> > slower and load is high. You would know this if you had any realy
> > > >> > knowledge of this.
>
> > > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > > >> >>power to accelerate uphill fast even using regular gas.
>
> > > >> > All the more reason it can ping because when engine is making good
> > > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > > >> > pumping pressure are the highest for its mixtures being burned and
> > > >> > these higher pressure need more octane
>
> > > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > > >> > is a great combo, you really do not have a clue what good pulling
> > > >> > power is. (you have very low standards)
>
> > > >> >>I would be suspecting something else is making the noise.
>
> > > >> > Of course you would because you are clueless here
>
> > > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > > >> >>oranges to a 4.0's systems)
>
> > > >> > How much octane you need depends on engine temp, air temp, load,
> > > >> > humidity, altitude and well as deposits in engine from age and minute
> > > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > > >> > and the trick is to use a high enough octane to meet maximum needs.
> > > >> > What people need themselves can vary and is not universal 87 does it
> > > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > > >> > since early 80's.
>
> > > >> >>Mike
> > > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > > >> >>(More Off Road album links at bottom of the view page)
>
> > > >> >>Tracie wrote:
> > > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > > >> >>>> Quick question...
>
> > > >> >>>> 2006 TJ
> > > >> >>>> 6 speed manual
> > > >> >>>> 4.0 liter with I-6
> > > >> >>>> 31/10.50/15 BFGs
>
> > > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > > >> >>>> due
> > > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > > running
> > > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > > >> >>>> Any
> > > >> >>>> insight?
>
> > > >> >>> Sorry but I forgot to add the following....
>
> > > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > > >> >>> mainly while going uphill (little or big), I get this noise on the
> > > >> >>> passenger side that sounds VERY similar to the soft top side window
> > > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > > >> >>> am not 100% sure whether it's coming from the front or the back.
> > > >> >>> It's
> > > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > > >> >>> so
> > > >> >>> I don't know if it will be reduced again once I get to that point. I
> > > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > > >> >>> this
> > > >> >>> be causing the problem too?
>
> > > >> > -----------------
> > > >> > TheSnoMan.com- Hide quoted text -
>
> > > - Show quoted text -
>
> > Wouldn't I get the same effect if I had the dealer retard the timing a
> > bit?- Hide quoted text -
>
> > - Show quoted text -
>
> ULB --
>
> I did take it to the dealer quite a while back, but according to them
> it's another one of those "normal" things that a jeep does. They took
> a ride out in it with me, and did hear the noise I was referring to.
> It very well could be normal since I have heard it since I bought it
> new. They told me not to worry that it was completely normal.
>
> Also, I noticed that today after my gas tank got to the 3/4 tank full
> mark, the noise I was describing in a previous post that I thought was
> pinging completely went away again. Seems to only do it until the
> first 1/4 tank of gas is used up. This is the second tank in a row
> that it has done this then quit like that. Then it quits. I also
> discovered that the 'pinging/tapping' noise I was hearing that sounded
> like my side windows flapping on the metal support bow was indeed just
> that. The wind was a bit stronger today than it has been the last
> couple of days, and it was flapping faintly and heavily -- each time
> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>
> - Show quoted text -
Chris --
Is that faint ticking sound from the injectors a steady and rhythmic
sound? It's not intermittent, correct? If that's what I am hearing,
I bet I am hearing it at highway speeds because I have a soft top, and
there is next to no insulation in it.
09-24-2007, 06:07 PM
#83
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
On Sep 24, 6:04 pm, Tracie <brain...@upstate.edu> wrote:
> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>
>
>
>
>
> > On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
> > > He's been in mine since he started his BS in alt.trucks.ford...
>
> > > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> > >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > > I
> > > > put him back in my kill file of course.
>
> > > > Saludos,
>
> > > > Earle
>
> > > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > > >> Sno,
>
> > > >> I, for one, appreciate your knowledge and contribution to the group,
> > > > but
> > > >> statements like "You would know this if you had any realy knowledge of
> > > >> this." and "Of course you would because you are clueless here" are
> > > >> irrelevant and worthless.
>
> > > >> Carl
>
> > > >> "SnoMan" <ad...@snoman.com> wrote in message
> > > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > > >> > wrote:
>
> > > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > > >> >>any driving condition.
>
> > > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > > >> > slower and load is high. You would know this if you had any realy
> > > >> > knowledge of this.
>
> > > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > > >> >>power to accelerate uphill fast even using regular gas.
>
> > > >> > All the more reason it can ping because when engine is making good
> > > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > > >> > pumping pressure are the highest for its mixtures being burned and
> > > >> > these higher pressure need more octane
>
> > > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > > >> > is a great combo, you really do not have a clue what good pulling
> > > >> > power is. (you have very low standards)
>
> > > >> >>I would be suspecting something else is making the noise.
>
> > > >> > Of course you would because you are clueless here
>
> > > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > > >> >>oranges to a 4.0's systems)
>
> > > >> > How much octane you need depends on engine temp, air temp, load,
> > > >> > humidity, altitude and well as deposits in engine from age and minute
> > > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > > >> > and the trick is to use a high enough octane to meet maximum needs.
> > > >> > What people need themselves can vary and is not universal 87 does it
> > > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > > >> > since early 80's.
>
> > > >> >>Mike
> > > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > > >> >>(More Off Road album links at bottom of the view page)
>
> > > >> >>Tracie wrote:
> > > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > > >> >>>> Quick question...
>
> > > >> >>>> 2006 TJ
> > > >> >>>> 6 speed manual
> > > >> >>>> 4.0 liter with I-6
> > > >> >>>> 31/10.50/15 BFGs
>
> > > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > > >> >>>> due
> > > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > > running
> > > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > > >> >>>> Any
> > > >> >>>> insight?
>
> > > >> >>> Sorry but I forgot to add the following....
>
> > > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > > >> >>> mainly while going uphill (little or big), I get this noise on the
> > > >> >>> passenger side that sounds VERY similar to the soft top side window
> > > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > > >> >>> am not 100% sure whether it's coming from the front or the back.
> > > >> >>> It's
> > > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > > >> >>> so
> > > >> >>> I don't know if it will be reduced again once I get to that point. I
> > > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > > >> >>> this
> > > >> >>> be causing the problem too?
>
> > > >> > -----------------
> > > >> > TheSnoMan.com- Hide quoted text -
>
> > > - Show quoted text -
>
> > Wouldn't I get the same effect if I had the dealer retard the timing a
> > bit?- Hide quoted text -
>
> > - Show quoted text -
>
> ULB --
>
> I did take it to the dealer quite a while back, but according to them
> it's another one of those "normal" things that a jeep does. They took
> a ride out in it with me, and did hear the noise I was referring to.
> It very well could be normal since I have heard it since I bought it
> new. They told me not to worry that it was completely normal.
>
> Also, I noticed that today after my gas tank got to the 3/4 tank full
> mark, the noise I was describing in a previous post that I thought was
> pinging completely went away again. Seems to only do it until the
> first 1/4 tank of gas is used up. This is the second tank in a row
> that it has done this then quit like that. Then it quits. I also
> discovered that the 'pinging/tapping' noise I was hearing that sounded
> like my side windows flapping on the metal support bow was indeed just
> that. The wind was a bit stronger today than it has been the last
> couple of days, and it was flapping faintly and heavily -- each time
> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>
> - Show quoted text -
Chris --
Is that faint ticking sound from the injectors a steady and rhythmic
sound? It's not intermittent, correct? If that's what I am hearing,
I bet I am hearing it at highway speeds because I have a soft top, and
there is next to no insulation in it.
> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>
>
>
>
>
> > On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
> > > He's been in mine since he started his BS in alt.trucks.ford...
>
> > > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> > >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > > I
> > > > put him back in my kill file of course.
>
> > > > Saludos,
>
> > > > Earle
>
> > > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > > >> Sno,
>
> > > >> I, for one, appreciate your knowledge and contribution to the group,
> > > > but
> > > >> statements like "You would know this if you had any realy knowledge of
> > > >> this." and "Of course you would because you are clueless here" are
> > > >> irrelevant and worthless.
>
> > > >> Carl
>
> > > >> "SnoMan" <ad...@snoman.com> wrote in message
> > > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > > >> > wrote:
>
> > > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > > >> >>any driving condition.
>
> > > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > > >> > slower and load is high. You would know this if you had any realy
> > > >> > knowledge of this.
>
> > > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > > >> >>power to accelerate uphill fast even using regular gas.
>
> > > >> > All the more reason it can ping because when engine is making good
> > > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > > >> > pumping pressure are the highest for its mixtures being burned and
> > > >> > these higher pressure need more octane
>
> > > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > > >> > is a great combo, you really do not have a clue what good pulling
> > > >> > power is. (you have very low standards)
>
> > > >> >>I would be suspecting something else is making the noise.
>
> > > >> > Of course you would because you are clueless here
>
> > > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > > >> >>oranges to a 4.0's systems)
>
> > > >> > How much octane you need depends on engine temp, air temp, load,
> > > >> > humidity, altitude and well as deposits in engine from age and minute
> > > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > > >> > and the trick is to use a high enough octane to meet maximum needs.
> > > >> > What people need themselves can vary and is not universal 87 does it
> > > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > > >> > since early 80's.
>
> > > >> >>Mike
> > > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > > >> >>(More Off Road album links at bottom of the view page)
>
> > > >> >>Tracie wrote:
> > > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > > >> >>>> Quick question...
>
> > > >> >>>> 2006 TJ
> > > >> >>>> 6 speed manual
> > > >> >>>> 4.0 liter with I-6
> > > >> >>>> 31/10.50/15 BFGs
>
> > > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > > >> >>>> due
> > > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > > running
> > > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > > >> >>>> Any
> > > >> >>>> insight?
>
> > > >> >>> Sorry but I forgot to add the following....
>
> > > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > > >> >>> mainly while going uphill (little or big), I get this noise on the
> > > >> >>> passenger side that sounds VERY similar to the soft top side window
> > > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > > >> >>> am not 100% sure whether it's coming from the front or the back.
> > > >> >>> It's
> > > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > > >> >>> so
> > > >> >>> I don't know if it will be reduced again once I get to that point. I
> > > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > > >> >>> this
> > > >> >>> be causing the problem too?
>
> > > >> > -----------------
> > > >> > TheSnoMan.com- Hide quoted text -
>
> > > - Show quoted text -
>
> > Wouldn't I get the same effect if I had the dealer retard the timing a
> > bit?- Hide quoted text -
>
> > - Show quoted text -
>
> ULB --
>
> I did take it to the dealer quite a while back, but according to them
> it's another one of those "normal" things that a jeep does. They took
> a ride out in it with me, and did hear the noise I was referring to.
> It very well could be normal since I have heard it since I bought it
> new. They told me not to worry that it was completely normal.
>
> Also, I noticed that today after my gas tank got to the 3/4 tank full
> mark, the noise I was describing in a previous post that I thought was
> pinging completely went away again. Seems to only do it until the
> first 1/4 tank of gas is used up. This is the second tank in a row
> that it has done this then quit like that. Then it quits. I also
> discovered that the 'pinging/tapping' noise I was hearing that sounded
> like my side windows flapping on the metal support bow was indeed just
> that. The wind was a bit stronger today than it has been the last
> couple of days, and it was flapping faintly and heavily -- each time
> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>
> - Show quoted text -
Chris --
Is that faint ticking sound from the injectors a steady and rhythmic
sound? It's not intermittent, correct? If that's what I am hearing,
I bet I am hearing it at highway speeds because I have a soft top, and
there is next to no insulation in it.
09-24-2007, 06:07 PM
#84
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
On Sep 24, 6:04 pm, Tracie <brain...@upstate.edu> wrote:
> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>
>
>
>
>
> > On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
> > > He's been in mine since he started his BS in alt.trucks.ford...
>
> > > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> > >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > > I
> > > > put him back in my kill file of course.
>
> > > > Saludos,
>
> > > > Earle
>
> > > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > > >> Sno,
>
> > > >> I, for one, appreciate your knowledge and contribution to the group,
> > > > but
> > > >> statements like "You would know this if you had any realy knowledge of
> > > >> this." and "Of course you would because you are clueless here" are
> > > >> irrelevant and worthless.
>
> > > >> Carl
>
> > > >> "SnoMan" <ad...@snoman.com> wrote in message
> > > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > > >> > wrote:
>
> > > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > > >> >>any driving condition.
>
> > > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > > >> > slower and load is high. You would know this if you had any realy
> > > >> > knowledge of this.
>
> > > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > > >> >>power to accelerate uphill fast even using regular gas.
>
> > > >> > All the more reason it can ping because when engine is making good
> > > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > > >> > pumping pressure are the highest for its mixtures being burned and
> > > >> > these higher pressure need more octane
>
> > > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > > >> > is a great combo, you really do not have a clue what good pulling
> > > >> > power is. (you have very low standards)
>
> > > >> >>I would be suspecting something else is making the noise.
>
> > > >> > Of course you would because you are clueless here
>
> > > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > > >> >>oranges to a 4.0's systems)
>
> > > >> > How much octane you need depends on engine temp, air temp, load,
> > > >> > humidity, altitude and well as deposits in engine from age and minute
> > > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > > >> > and the trick is to use a high enough octane to meet maximum needs.
> > > >> > What people need themselves can vary and is not universal 87 does it
> > > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > > >> > since early 80's.
>
> > > >> >>Mike
> > > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > > >> >>(More Off Road album links at bottom of the view page)
>
> > > >> >>Tracie wrote:
> > > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > > >> >>>> Quick question...
>
> > > >> >>>> 2006 TJ
> > > >> >>>> 6 speed manual
> > > >> >>>> 4.0 liter with I-6
> > > >> >>>> 31/10.50/15 BFGs
>
> > > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > > >> >>>> due
> > > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > > running
> > > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > > >> >>>> Any
> > > >> >>>> insight?
>
> > > >> >>> Sorry but I forgot to add the following....
>
> > > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > > >> >>> mainly while going uphill (little or big), I get this noise on the
> > > >> >>> passenger side that sounds VERY similar to the soft top side window
> > > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > > >> >>> am not 100% sure whether it's coming from the front or the back.
> > > >> >>> It's
> > > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > > >> >>> so
> > > >> >>> I don't know if it will be reduced again once I get to that point. I
> > > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > > >> >>> this
> > > >> >>> be causing the problem too?
>
> > > >> > -----------------
> > > >> > TheSnoMan.com- Hide quoted text -
>
> > > - Show quoted text -
>
> > Wouldn't I get the same effect if I had the dealer retard the timing a
> > bit?- Hide quoted text -
>
> > - Show quoted text -
>
> ULB --
>
> I did take it to the dealer quite a while back, but according to them
> it's another one of those "normal" things that a jeep does. They took
> a ride out in it with me, and did hear the noise I was referring to.
> It very well could be normal since I have heard it since I bought it
> new. They told me not to worry that it was completely normal.
>
> Also, I noticed that today after my gas tank got to the 3/4 tank full
> mark, the noise I was describing in a previous post that I thought was
> pinging completely went away again. Seems to only do it until the
> first 1/4 tank of gas is used up. This is the second tank in a row
> that it has done this then quit like that. Then it quits. I also
> discovered that the 'pinging/tapping' noise I was hearing that sounded
> like my side windows flapping on the metal support bow was indeed just
> that. The wind was a bit stronger today than it has been the last
> couple of days, and it was flapping faintly and heavily -- each time
> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>
> - Show quoted text -
Chris --
Is that faint ticking sound from the injectors a steady and rhythmic
sound? It's not intermittent, correct? If that's what I am hearing,
I bet I am hearing it at highway speeds because I have a soft top, and
there is next to no insulation in it.
> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>
>
>
>
>
> > On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
> > > He's been in mine since he started his BS in alt.trucks.ford...
>
> > > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> > >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > > I
> > > > put him back in my kill file of course.
>
> > > > Saludos,
>
> > > > Earle
>
> > > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > > >> Sno,
>
> > > >> I, for one, appreciate your knowledge and contribution to the group,
> > > > but
> > > >> statements like "You would know this if you had any realy knowledge of
> > > >> this." and "Of course you would because you are clueless here" are
> > > >> irrelevant and worthless.
>
> > > >> Carl
>
> > > >> "SnoMan" <ad...@snoman.com> wrote in message
> > > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > > >> > wrote:
>
> > > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > > >> >>any driving condition.
>
> > > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > > >> > slower and load is high. You would know this if you had any realy
> > > >> > knowledge of this.
>
> > > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > > >> >>power to accelerate uphill fast even using regular gas.
>
> > > >> > All the more reason it can ping because when engine is making good
> > > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > > >> > pumping pressure are the highest for its mixtures being burned and
> > > >> > these higher pressure need more octane
>
> > > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > > >> > is a great combo, you really do not have a clue what good pulling
> > > >> > power is. (you have very low standards)
>
> > > >> >>I would be suspecting something else is making the noise.
>
> > > >> > Of course you would because you are clueless here
>
> > > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > > >> >>oranges to a 4.0's systems)
>
> > > >> > How much octane you need depends on engine temp, air temp, load,
> > > >> > humidity, altitude and well as deposits in engine from age and minute
> > > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > > >> > and the trick is to use a high enough octane to meet maximum needs.
> > > >> > What people need themselves can vary and is not universal 87 does it
> > > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > > >> > since early 80's.
>
> > > >> >>Mike
> > > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > > >> >>(More Off Road album links at bottom of the view page)
>
> > > >> >>Tracie wrote:
> > > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > > >> >>>> Quick question...
>
> > > >> >>>> 2006 TJ
> > > >> >>>> 6 speed manual
> > > >> >>>> 4.0 liter with I-6
> > > >> >>>> 31/10.50/15 BFGs
>
> > > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > > >> >>>> due
> > > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > > running
> > > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > > >> >>>> Any
> > > >> >>>> insight?
>
> > > >> >>> Sorry but I forgot to add the following....
>
> > > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > > >> >>> mainly while going uphill (little or big), I get this noise on the
> > > >> >>> passenger side that sounds VERY similar to the soft top side window
> > > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > > >> >>> am not 100% sure whether it's coming from the front or the back.
> > > >> >>> It's
> > > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > > >> >>> so
> > > >> >>> I don't know if it will be reduced again once I get to that point. I
> > > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > > >> >>> this
> > > >> >>> be causing the problem too?
>
> > > >> > -----------------
> > > >> > TheSnoMan.com- Hide quoted text -
>
> > > - Show quoted text -
>
> > Wouldn't I get the same effect if I had the dealer retard the timing a
> > bit?- Hide quoted text -
>
> > - Show quoted text -
>
> ULB --
>
> I did take it to the dealer quite a while back, but according to them
> it's another one of those "normal" things that a jeep does. They took
> a ride out in it with me, and did hear the noise I was referring to.
> It very well could be normal since I have heard it since I bought it
> new. They told me not to worry that it was completely normal.
>
> Also, I noticed that today after my gas tank got to the 3/4 tank full
> mark, the noise I was describing in a previous post that I thought was
> pinging completely went away again. Seems to only do it until the
> first 1/4 tank of gas is used up. This is the second tank in a row
> that it has done this then quit like that. Then it quits. I also
> discovered that the 'pinging/tapping' noise I was hearing that sounded
> like my side windows flapping on the metal support bow was indeed just
> that. The wind was a bit stronger today than it has been the last
> couple of days, and it was flapping faintly and heavily -- each time
> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>
> - Show quoted text -
Chris --
Is that faint ticking sound from the injectors a steady and rhythmic
sound? It's not intermittent, correct? If that's what I am hearing,
I bet I am hearing it at highway speeds because I have a soft top, and
there is next to no insulation in it.
09-24-2007, 06:07 PM
#85
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
On Sep 24, 6:04 pm, Tracie <brain...@upstate.edu> wrote:
> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>
>
>
>
>
> > On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
> > > He's been in mine since he started his BS in alt.trucks.ford...
>
> > > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> > >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > > I
> > > > put him back in my kill file of course.
>
> > > > Saludos,
>
> > > > Earle
>
> > > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > > >> Sno,
>
> > > >> I, for one, appreciate your knowledge and contribution to the group,
> > > > but
> > > >> statements like "You would know this if you had any realy knowledge of
> > > >> this." and "Of course you would because you are clueless here" are
> > > >> irrelevant and worthless.
>
> > > >> Carl
>
> > > >> "SnoMan" <ad...@snoman.com> wrote in message
> > > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > > >> > wrote:
>
> > > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > > >> >>any driving condition.
>
> > > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > > >> > slower and load is high. You would know this if you had any realy
> > > >> > knowledge of this.
>
> > > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > > >> >>power to accelerate uphill fast even using regular gas.
>
> > > >> > All the more reason it can ping because when engine is making good
> > > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > > >> > pumping pressure are the highest for its mixtures being burned and
> > > >> > these higher pressure need more octane
>
> > > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > > >> > is a great combo, you really do not have a clue what good pulling
> > > >> > power is. (you have very low standards)
>
> > > >> >>I would be suspecting something else is making the noise.
>
> > > >> > Of course you would because you are clueless here
>
> > > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > > >> >>oranges to a 4.0's systems)
>
> > > >> > How much octane you need depends on engine temp, air temp, load,
> > > >> > humidity, altitude and well as deposits in engine from age and minute
> > > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > > >> > and the trick is to use a high enough octane to meet maximum needs.
> > > >> > What people need themselves can vary and is not universal 87 does it
> > > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > > >> > since early 80's.
>
> > > >> >>Mike
> > > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > > >> >>(More Off Road album links at bottom of the view page)
>
> > > >> >>Tracie wrote:
> > > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > > >> >>>> Quick question...
>
> > > >> >>>> 2006 TJ
> > > >> >>>> 6 speed manual
> > > >> >>>> 4.0 liter with I-6
> > > >> >>>> 31/10.50/15 BFGs
>
> > > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > > >> >>>> due
> > > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > > running
> > > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > > >> >>>> Any
> > > >> >>>> insight?
>
> > > >> >>> Sorry but I forgot to add the following....
>
> > > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > > >> >>> mainly while going uphill (little or big), I get this noise on the
> > > >> >>> passenger side that sounds VERY similar to the soft top side window
> > > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > > >> >>> am not 100% sure whether it's coming from the front or the back.
> > > >> >>> It's
> > > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > > >> >>> so
> > > >> >>> I don't know if it will be reduced again once I get to that point. I
> > > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > > >> >>> this
> > > >> >>> be causing the problem too?
>
> > > >> > -----------------
> > > >> > TheSnoMan.com- Hide quoted text -
>
> > > - Show quoted text -
>
> > Wouldn't I get the same effect if I had the dealer retard the timing a
> > bit?- Hide quoted text -
>
> > - Show quoted text -
>
> ULB --
>
> I did take it to the dealer quite a while back, but according to them
> it's another one of those "normal" things that a jeep does. They took
> a ride out in it with me, and did hear the noise I was referring to.
> It very well could be normal since I have heard it since I bought it
> new. They told me not to worry that it was completely normal.
>
> Also, I noticed that today after my gas tank got to the 3/4 tank full
> mark, the noise I was describing in a previous post that I thought was
> pinging completely went away again. Seems to only do it until the
> first 1/4 tank of gas is used up. This is the second tank in a row
> that it has done this then quit like that. Then it quits. I also
> discovered that the 'pinging/tapping' noise I was hearing that sounded
> like my side windows flapping on the metal support bow was indeed just
> that. The wind was a bit stronger today than it has been the last
> couple of days, and it was flapping faintly and heavily -- each time
> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>
> - Show quoted text -
Chris --
Is that faint ticking sound from the injectors a steady and rhythmic
sound? It's not intermittent, correct? If that's what I am hearing,
I bet I am hearing it at highway speeds because I have a soft top, and
there is next to no insulation in it.
> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>
>
>
>
>
> > On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>
> > > He's been in mine since he started his BS in alt.trucks.ford...
>
> > > "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>
> > >news:fd995u$6ds$1@registered.motzarella.org...
>
> > > > Funny, there isn't much difference between Hispanic newsgroups and Anglo
> > > > newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
> > > > I
> > > > put him back in my kill file of course.
>
> > > > Saludos,
>
> > > > Earle
>
> > > > "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
> > > >news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
> > > >> Sno,
>
> > > >> I, for one, appreciate your knowledge and contribution to the group,
> > > > but
> > > >> statements like "You would know this if you had any realy knowledge of
> > > >> this." and "Of course you would because you are clueless here" are
> > > >> irrelevant and worthless.
>
> > > >> Carl
>
> > > >> "SnoMan" <ad...@snoman.com> wrote in message
> > > >>news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com. ..
> > > >> > On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
> > > >> > wrote:
>
> > > >> >>I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
> > > >> >>any driving condition.
>
> > > >> > Engine are more prone to ping at lower RPMs when rate of expansion is
> > > >> > slower and load is high. You would know this if you had any realy
> > > >> > knowledge of this.
>
> > > >> >>At that rpm, you are way up in the torque curve and should have tons of
> > > >> >>power to accelerate uphill fast even using regular gas.
>
> > > >> > All the more reason it can ping because when engine is making good
> > > >> > torque it is near its VE peak (Volumetric Efficency) where effective
> > > >> > pumping pressure are the highest for its mixtures being burned and
> > > >> > these higher pressure need more octane
>
> > > >> >>My Jeeps have tons of power when fully loaded for camping at that rpm,
> > > >> >>they will 'hold' 2300 rpm at least on anything.
>
> > > >> > I take this with a grain of salt since you think 3.31 gears with 33's
> > > >> > is a great combo, you really do not have a clue what good pulling
> > > >> > power is. (you have very low standards)
>
> > > >> >>I would be suspecting something else is making the noise.
>
> > > >> > Of course you would because you are clueless here
>
> > > >> >>I can only start a ping if I am way down into the mid teens for rpm or
> > > >> >>have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
> > > >> >>oranges to a 4.0's systems)
>
> > > >> > How much octane you need depends on engine temp, air temp, load,
> > > >> > humidity, altitude and well as deposits in engine from age and minute
> > > >> > oil usage too which lowers octane needs. Octane needs are not constant
> > > >> > and the trick is to use a high enough octane to meet maximum needs.
> > > >> > What people need themselves can vary and is not universal 87 does it
> > > >> > all as clueless here suggests. BTW, I do not use 87 in anything made
> > > >> > since early 80's.
>
> > > >> >>Mike
> > > >> >>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > >> >>88 Cherokee 235 BFG AT's - Gone to the rust pile...
> > > >> >>Canadian Off Road Trips Photos: Non members can still view!
> > > >> >>Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
> > > >> >>(More Off Road album links at bottom of the view page)
>
> > > >> >>Tracie wrote:
> > > >> >>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
> > > >> >>>> Quick question...
>
> > > >> >>>> 2006 TJ
> > > >> >>>> 6 speed manual
> > > >> >>>> 4.0 liter with I-6
> > > >> >>>> 31/10.50/15 BFGs
>
> > > >> >>>> When moving along at highway speeds or at lower speeds, does anyone
> > > >> >>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
> > > >> >>>> not sure if this is pinging or simply just the normal sound of the
> > > >> >>>> motor. Keep in mind that I do not use my 6th gear on the highway
> > > >> >>>> due
> > > >> >>>> to the 31s. I am travelling along at approximately 65 mph and
> > > > running
> > > >> >>>> about 2400-2500 rpms when this sound occurs. If I back off the
> > > >> >>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
> > > >> >>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
> > > >> >>>> Any
> > > >> >>>> insight?
>
> > > >> >>> Sorry but I forgot to add the following....
>
> > > >> >>> Since I have upgraded from 28s to 31s, can that cause the engine to
> > > >> >>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
> > > >> >>> (I have a 6 speed). In the higher gears after the engine is warm and
> > > >> >>> mainly while going uphill (little or big), I get this noise on the
> > > >> >>> passenger side that sounds VERY similar to the soft top side window
> > > >> >>> 'pinging' against the metal support bow when the wind blows. I can't
> > > >> >>> quite distinguish if that's it, or if the engine is pinging because I
> > > >> >>> am not 100% sure whether it's coming from the front or the back.
> > > >> >>> It's
> > > >> >>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
> > > >> >>> and goes intermittently. This noise does NOT happen at city/town
> > > >> >>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
> > > >> >>> seemed to be drastically reduced after 1/4 of the tank was used and
> > > >> >>> for the rest of the 3/4 of the tank. I have now refilled again with
> > > >> >>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
> > > >> >>> so
> > > >> >>> I don't know if it will be reduced again once I get to that point. I
> > > >> >>> do have a tendecy to 'stuff' as much gas in the tank as I can get
> > > >> >>> (even after the automatic shuf-off on the spout kicks on). Would
> > > >> >>> this
> > > >> >>> be causing the problem too?
>
> > > >> > -----------------
> > > >> > TheSnoMan.com- Hide quoted text -
>
> > > - Show quoted text -
>
> > Wouldn't I get the same effect if I had the dealer retard the timing a
> > bit?- Hide quoted text -
>
> > - Show quoted text -
>
> ULB --
>
> I did take it to the dealer quite a while back, but according to them
> it's another one of those "normal" things that a jeep does. They took
> a ride out in it with me, and did hear the noise I was referring to.
> It very well could be normal since I have heard it since I bought it
> new. They told me not to worry that it was completely normal.
>
> Also, I noticed that today after my gas tank got to the 3/4 tank full
> mark, the noise I was describing in a previous post that I thought was
> pinging completely went away again. Seems to only do it until the
> first 1/4 tank of gas is used up. This is the second tank in a row
> that it has done this then quit like that. Then it quits. I also
> discovered that the 'pinging/tapping' noise I was hearing that sounded
> like my side windows flapping on the metal support bow was indeed just
> that. The wind was a bit stronger today than it has been the last
> couple of days, and it was flapping faintly and heavily -- each time
> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>
> - Show quoted text -
Chris --
Is that faint ticking sound from the injectors a steady and rhythmic
sound? It's not intermittent, correct? If that's what I am hearing,
I bet I am hearing it at highway speeds because I have a soft top, and
there is next to no insulation in it.
09-24-2007, 07:36 PM
#86
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
In article <oa6gf3pnt1m1vpv5b7bm0r62k6tbso7q9l@4ax.com>,
admin@snoman.com says...
> If I was rude, it was not toward you. I have a running battle with
> Mike Romain and some of his very bad advise.
Speaking of bad advice lets look at some I have highlighted
SBJ: Dumb brake question
http://tinyurl.com/2ya3wo
SBJ: Front wheel bearings-2000 Blazer??
http://tinyurl.com/2j44zv
SBJ: Snoball Defense System v1.01
http://tinyurl.com/2okyfx
admin@snoman.com says...
> If I was rude, it was not toward you. I have a running battle with
> Mike Romain and some of his very bad advise.
Speaking of bad advice lets look at some I have highlighted
SBJ: Dumb brake question
http://tinyurl.com/2ya3wo
SBJ: Front wheel bearings-2000 Blazer??
http://tinyurl.com/2j44zv
SBJ: Snoball Defense System v1.01
http://tinyurl.com/2okyfx
09-24-2007, 07:36 PM
#87
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
In article <oa6gf3pnt1m1vpv5b7bm0r62k6tbso7q9l@4ax.com>,
admin@snoman.com says...
> If I was rude, it was not toward you. I have a running battle with
> Mike Romain and some of his very bad advise.
Speaking of bad advice lets look at some I have highlighted
SBJ: Dumb brake question
http://tinyurl.com/2ya3wo
SBJ: Front wheel bearings-2000 Blazer??
http://tinyurl.com/2j44zv
SBJ: Snoball Defense System v1.01
http://tinyurl.com/2okyfx
admin@snoman.com says...
> If I was rude, it was not toward you. I have a running battle with
> Mike Romain and some of his very bad advise.
Speaking of bad advice lets look at some I have highlighted
SBJ: Dumb brake question
http://tinyurl.com/2ya3wo
SBJ: Front wheel bearings-2000 Blazer??
http://tinyurl.com/2j44zv
SBJ: Snoball Defense System v1.01
http://tinyurl.com/2okyfx
09-24-2007, 07:36 PM
#88
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
In article <oa6gf3pnt1m1vpv5b7bm0r62k6tbso7q9l@4ax.com>,
admin@snoman.com says...
> If I was rude, it was not toward you. I have a running battle with
> Mike Romain and some of his very bad advise.
Speaking of bad advice lets look at some I have highlighted
SBJ: Dumb brake question
http://tinyurl.com/2ya3wo
SBJ: Front wheel bearings-2000 Blazer??
http://tinyurl.com/2j44zv
SBJ: Snoball Defense System v1.01
http://tinyurl.com/2okyfx
admin@snoman.com says...
> If I was rude, it was not toward you. I have a running battle with
> Mike Romain and some of his very bad advise.
Speaking of bad advice lets look at some I have highlighted
SBJ: Dumb brake question
http://tinyurl.com/2ya3wo
SBJ: Front wheel bearings-2000 Blazer??
http://tinyurl.com/2j44zv
SBJ: Snoball Defense System v1.01
http://tinyurl.com/2okyfx
09-24-2007, 07:36 PM
#89
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
In article <oa6gf3pnt1m1vpv5b7bm0r62k6tbso7q9l@4ax.com>,
admin@snoman.com says...
> If I was rude, it was not toward you. I have a running battle with
> Mike Romain and some of his very bad advise.
Speaking of bad advice lets look at some I have highlighted
SBJ: Dumb brake question
http://tinyurl.com/2ya3wo
SBJ: Front wheel bearings-2000 Blazer??
http://tinyurl.com/2j44zv
SBJ: Snoball Defense System v1.01
http://tinyurl.com/2okyfx
admin@snoman.com says...
> If I was rude, it was not toward you. I have a running battle with
> Mike Romain and some of his very bad advise.
Speaking of bad advice lets look at some I have highlighted
SBJ: Dumb brake question
http://tinyurl.com/2ya3wo
SBJ: Front wheel bearings-2000 Blazer??
http://tinyurl.com/2j44zv
SBJ: Snoball Defense System v1.01
http://tinyurl.com/2okyfx
09-24-2007, 08:12 PM
#90
Guest
Posts: n/a
Re: TO PING OR NOT TO PING?
Tracie wrote:
> On Sep 24, 6:04 pm, Tracie <brain...@upstate.edu> wrote:
>> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>>
>>
>>
>>
>>
>>> On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>>>> He's been in mine since he started his BS in alt.trucks.ford...
>>>> "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>>>> news:fd995u$6ds$1@registered.motzarella.org...
>>>>> Funny, there isn't much difference between Hispanic newsgroups and Anglo
>>>>> newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
>>>>> I
>>>>> put him back in my kill file of course.
>>>>> Saludos,
>>>>> Earle
>>>>> "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
>>>>> news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
>>>>>> Sno,
>>>>>> I, for one, appreciate your knowledge and contribution to the group,
>>>>> but
>>>>>> statements like "You would know this if you had any realy knowledge of
>>>>>> this." and "Of course you would because you are clueless here" are
>>>>>> irrelevant and worthless.
>>>>>> Carl
>>>>>> "SnoMan" <ad...@snoman.com> wrote in message
>>>>>> news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com...
>>>>>>> On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
>>>>>>> wrote:
>>>>>>>> I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
>>>>>>>> any driving condition.
>>>>>>> Engine are more prone to ping at lower RPMs when rate of expansion is
>>>>>>> slower and load is high. You would know this if you had any realy
>>>>>>> knowledge of this.
>>>>>>>> At that rpm, you are way up in the torque curve and should have tons of
>>>>>>>> power to accelerate uphill fast even using regular gas.
>>>>>>> All the more reason it can ping because when engine is making good
>>>>>>> torque it is near its VE peak (Volumetric Efficency) where effective
>>>>>>> pumping pressure are the highest for its mixtures being burned and
>>>>>>> these higher pressure need more octane
>>>>>>>> My Jeeps have tons of power when fully loaded for camping at that rpm,
>>>>>>>> they will 'hold' 2300 rpm at least on anything.
>>>>>>> I take this with a grain of salt since you think 3.31 gears with 33's
>>>>>>> is a great combo, you really do not have a clue what good pulling
>>>>>>> power is. (you have very low standards)
>>>>>>>> I would be suspecting something else is making the noise.
>>>>>>> Of course you would because you are clueless here
>>>>>>>> I can only start a ping if I am way down into the mid teens for rpm or
>>>>>>>> have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
>>>>>>>> oranges to a 4.0's systems)
>>>>>>> How much octane you need depends on engine temp, air temp, load,
>>>>>>> humidity, altitude and well as deposits in engine from age and minute
>>>>>>> oil usage too which lowers octane needs. Octane needs are not constant
>>>>>>> and the trick is to use a high enough octane to meet maximum needs.
>>>>>>> What people need themselves can vary and is not universal 87 does it
>>>>>>> all as clueless here suggests. BTW, I do not use 87 in anything made
>>>>>>> since early 80's.
>>>>>>>> Mike
>>>>>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>>>>>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>>>>>>>> Canadian Off Road Trips Photos: Non members can still view!
>>>>>>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>>>>>>>> (More Off Road album links at bottom of the view page)
>>>>>>>> Tracie wrote:
>>>>>>>>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
>>>>>>>>>> Quick question...
>>>>>>>>>> 2006 TJ
>>>>>>>>>> 6 speed manual
>>>>>>>>>> 4.0 liter with I-6
>>>>>>>>>> 31/10.50/15 BFGs
>>>>>>>>>> When moving along at highway speeds or at lower speeds, does anyone
>>>>>>>>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
>>>>>>>>>> not sure if this is pinging or simply just the normal sound of the
>>>>>>>>>> motor. Keep in mind that I do not use my 6th gear on the highway
>>>>>>>>>> due
>>>>>>>>>> to the 31s. I am travelling along at approximately 65 mph and
>>>>> running
>>>>>>>>>> about 2400-2500 rpms when this sound occurs. If I back off the
>>>>>>>>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
>>>>>>>>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
>>>>>>>>>> Any
>>>>>>>>>> insight?
>>>>>>>>> Sorry but I forgot to add the following....
>>>>>>>>> Since I have upgraded from 28s to 31s, can that cause the engine to
>>>>>>>>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
>>>>>>>>> (I have a 6 speed). In the higher gears after the engine is warm and
>>>>>>>>> mainly while going uphill (little or big), I get this noise on the
>>>>>>>>> passenger side that sounds VERY similar to the soft top side window
>>>>>>>>> 'pinging' against the metal support bow when the wind blows. I can't
>>>>>>>>> quite distinguish if that's it, or if the engine is pinging because I
>>>>>>>>> am not 100% sure whether it's coming from the front or the back.
>>>>>>>>> It's
>>>>>>>>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
>>>>>>>>> and goes intermittently. This noise does NOT happen at city/town
>>>>>>>>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
>>>>>>>>> seemed to be drastically reduced after 1/4 of the tank was used and
>>>>>>>>> for the rest of the 3/4 of the tank. I have now refilled again with
>>>>>>>>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
>>>>>>>>> so
>>>>>>>>> I don't know if it will be reduced again once I get to that point. I
>>>>>>>>> do have a tendecy to 'stuff' as much gas in the tank as I can get
>>>>>>>>> (even after the automatic shuf-off on the spout kicks on). Would
>>>>>>>>> this
>>>>>>>>> be causing the problem too?
>>>>>>> -----------------
>>>>>>> TheSnoMan.com- Hide quoted text -
>>>> - Show quoted text -
>>> Wouldn't I get the same effect if I had the dealer retard the timing a
>>> bit?- Hide quoted text -
>>> - Show quoted text -
>> ULB --
>>
>> I did take it to the dealer quite a while back, but according to them
>> it's another one of those "normal" things that a jeep does. They took
>> a ride out in it with me, and did hear the noise I was referring to.
>> It very well could be normal since I have heard it since I bought it
>> new. They told me not to worry that it was completely normal.
>>
>> Also, I noticed that today after my gas tank got to the 3/4 tank full
>> mark, the noise I was describing in a previous post that I thought was
>> pinging completely went away again. Seems to only do it until the
>> first 1/4 tank of gas is used up. This is the second tank in a row
>> that it has done this then quit like that. Then it quits. I also
>> discovered that the 'pinging/tapping' noise I was hearing that sounded
>> like my side windows flapping on the metal support bow was indeed just
>> that. The wind was a bit stronger today than it has been the last
>> couple of days, and it was flapping faintly and heavily -- each time
>> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>>
>> - Show quoted text -
>
>
> Chris --
> Is that faint ticking sound from the injectors a steady and rhythmic
> sound? It's not intermittent, correct? If that's what I am hearing,
> I bet I am hearing it at highway speeds because I have a soft top, and
> there is next to no insulation in it.
>
Yes, it will be a steady rhythmic ticking sound that is proportional to
engine RPM. If you start your Jeep with the hood open, you will probably
be able to hear the injectors. You can compare that sound to what you're
hearing on the road. The only difference will be the frequency of the
clicking.
To answer your other question about timing, the computer will correct
your timing, so that won't work. I would be quite surprised if your
engine is actually pinging under the conditions you are describing
unless there is an issue with the fuel you're using, but like someone
else said, you can try a tank of 92 octane to see if it helps.
Chris
> On Sep 24, 6:04 pm, Tracie <brain...@upstate.edu> wrote:
>> On Sep 24, 5:57 pm, Tracie <brain...@upstate.edu> wrote:
>>
>>
>>
>>
>>
>>> On Sep 24, 5:51 pm, "Matt Macchiarolo" <m...@nospamplease.com> wrote:
>>>> He's been in mine since he started his BS in alt.trucks.ford...
>>>> "Earle Horton" <el_anglo_burg...@usa.com> wrote in message
>>>> news:fd995u$6ds$1@registered.motzarella.org...
>>>>> Funny, there isn't much difference between Hispanic newsgroups and Anglo
>>>>> newsgroups. I kept expecting to see "hijo de puta" in Snoball's message.
>>>>> I
>>>>> put him back in my kill file of course.
>>>>> Saludos,
>>>>> Earle
>>>>> "Carl S" <carlsai...@REMOVE.hotmail.com> wrote in message
>>>>> news:h_udnRsI-atXj2XbnZ2dnUVZ_gidnZ2d@comcast.com...
>>>>>> Sno,
>>>>>> I, for one, appreciate your knowledge and contribution to the group,
>>>>> but
>>>>>> statements like "You would know this if you had any realy knowledge of
>>>>>> this." and "Of course you would because you are clueless here" are
>>>>>> irrelevant and worthless.
>>>>>> Carl
>>>>>> "SnoMan" <ad...@snoman.com> wrote in message
>>>>>> news:rtsff3dqj6qg7qf4imrf28v8c2uo0ivdi1@4ax.com...
>>>>>>> On Mon, 24 Sep 2007 13:07:48 -0400, Mike Romain <roma...@sympatico.ca>
>>>>>>> wrote:
>>>>>>>> I highly doubt you can make a 4.0 engine ping at 2500 rpm under almost
>>>>>>>> any driving condition.
>>>>>>> Engine are more prone to ping at lower RPMs when rate of expansion is
>>>>>>> slower and load is high. You would know this if you had any realy
>>>>>>> knowledge of this.
>>>>>>>> At that rpm, you are way up in the torque curve and should have tons of
>>>>>>>> power to accelerate uphill fast even using regular gas.
>>>>>>> All the more reason it can ping because when engine is making good
>>>>>>> torque it is near its VE peak (Volumetric Efficency) where effective
>>>>>>> pumping pressure are the highest for its mixtures being burned and
>>>>>>> these higher pressure need more octane
>>>>>>>> My Jeeps have tons of power when fully loaded for camping at that rpm,
>>>>>>>> they will 'hold' 2300 rpm at least on anything.
>>>>>>> I take this with a grain of salt since you think 3.31 gears with 33's
>>>>>>> is a great combo, you really do not have a clue what good pulling
>>>>>>> power is. (you have very low standards)
>>>>>>>> I would be suspecting something else is making the noise.
>>>>>>> Of course you would because you are clueless here
>>>>>>>> I can only start a ping if I am way down into the mid teens for rpm or
>>>>>>>> have gas my CJ7's 258 doesn't like in it. (old carb engine, apples and
>>>>>>>> oranges to a 4.0's systems)
>>>>>>> How much octane you need depends on engine temp, air temp, load,
>>>>>>> humidity, altitude and well as deposits in engine from age and minute
>>>>>>> oil usage too which lowers octane needs. Octane needs are not constant
>>>>>>> and the trick is to use a high enough octane to meet maximum needs.
>>>>>>> What people need themselves can vary and is not universal 87 does it
>>>>>>> all as clueless here suggests. BTW, I do not use 87 in anything made
>>>>>>> since early 80's.
>>>>>>>> Mike
>>>>>>>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>>>>>>>> 88 Cherokee 235 BFG AT's - Gone to the rust pile...
>>>>>>>> Canadian Off Road Trips Photos: Non members can still view!
>>>>>>>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>>>>>>>> (More Off Road album links at bottom of the view page)
>>>>>>>> Tracie wrote:
>>>>>>>>> On Sep 24, 12:25 pm, Tracie <brain...@upstate.edu> wrote:
>>>>>>>>>> Quick question...
>>>>>>>>>> 2006 TJ
>>>>>>>>>> 6 speed manual
>>>>>>>>>> 4.0 liter with I-6
>>>>>>>>>> 31/10.50/15 BFGs
>>>>>>>>>> When moving along at highway speeds or at lower speeds, does anyone
>>>>>>>>>> else's Wrangler engine sound like a 'rattlesnake' is in there? I am
>>>>>>>>>> not sure if this is pinging or simply just the normal sound of the
>>>>>>>>>> motor. Keep in mind that I do not use my 6th gear on the highway
>>>>>>>>>> due
>>>>>>>>>> to the 31s. I am travelling along at approximately 65 mph and
>>>>> running
>>>>>>>>>> about 2400-2500 rpms when this sound occurs. If I back off the
>>>>>>>>>> accelerator and get to about 62-63 mph, the sound stops. It's not a
>>>>>>>>>> metallic type sound. Just a 'rattling' or 'purring' type sound.
>>>>>>>>>> Any
>>>>>>>>>> insight?
>>>>>>>>> Sorry but I forgot to add the following....
>>>>>>>>> Since I have upgraded from 28s to 31s, can that cause the engine to
>>>>>>>>> lug or ping? I generally keep the RPM's around 2200-2400 in 5th gear
>>>>>>>>> (I have a 6 speed). In the higher gears after the engine is warm and
>>>>>>>>> mainly while going uphill (little or big), I get this noise on the
>>>>>>>>> passenger side that sounds VERY similar to the soft top side window
>>>>>>>>> 'pinging' against the metal support bow when the wind blows. I can't
>>>>>>>>> quite distinguish if that's it, or if the engine is pinging because I
>>>>>>>>> am not 100% sure whether it's coming from the front or the back.
>>>>>>>>> It's
>>>>>>>>> a high-pitched noise. It is NOT rhythmic or steady, but rather comes
>>>>>>>>> and goes intermittently. This noise does NOT happen at city/town
>>>>>>>>> speeds of 50 mph or lower. I ran a tank of 89 through her, and it
>>>>>>>>> seemed to be drastically reduced after 1/4 of the tank was used and
>>>>>>>>> for the rest of the 3/4 of the tank. I have now refilled again with
>>>>>>>>> the 89 and the noise is back. I have not used 1/4 of the tank yet,
>>>>>>>>> so
>>>>>>>>> I don't know if it will be reduced again once I get to that point. I
>>>>>>>>> do have a tendecy to 'stuff' as much gas in the tank as I can get
>>>>>>>>> (even after the automatic shuf-off on the spout kicks on). Would
>>>>>>>>> this
>>>>>>>>> be causing the problem too?
>>>>>>> -----------------
>>>>>>> TheSnoMan.com- Hide quoted text -
>>>> - Show quoted text -
>>> Wouldn't I get the same effect if I had the dealer retard the timing a
>>> bit?- Hide quoted text -
>>> - Show quoted text -
>> ULB --
>>
>> I did take it to the dealer quite a while back, but according to them
>> it's another one of those "normal" things that a jeep does. They took
>> a ride out in it with me, and did hear the noise I was referring to.
>> It very well could be normal since I have heard it since I bought it
>> new. They told me not to worry that it was completely normal.
>>
>> Also, I noticed that today after my gas tank got to the 3/4 tank full
>> mark, the noise I was describing in a previous post that I thought was
>> pinging completely went away again. Seems to only do it until the
>> first 1/4 tank of gas is used up. This is the second tank in a row
>> that it has done this then quit like that. Then it quits. I also
>> discovered that the 'pinging/tapping' noise I was hearing that sounded
>> like my side windows flapping on the metal support bow was indeed just
>> that. The wind was a bit stronger today than it has been the last
>> couple of days, and it was flapping faintly and heavily -- each time
>> when the wind was blowing. One down, a couple more to go. : D- Hide quoted text -
>>
>> - Show quoted text -
>
>
> Chris --
> Is that faint ticking sound from the injectors a steady and rhythmic
> sound? It's not intermittent, correct? If that's what I am hearing,
> I bet I am hearing it at highway speeds because I have a soft top, and
> there is next to no insulation in it.
>
Yes, it will be a steady rhythmic ticking sound that is proportional to
engine RPM. If you start your Jeep with the hood open, you will probably
be able to hear the injectors. You can compare that sound to what you're
hearing on the road. The only difference will be the frequency of the
clicking.
To answer your other question about timing, the computer will correct
your timing, so that won't work. I would be quite surprised if your
engine is actually pinging under the conditions you are describing
unless there is an issue with the fuel you're using, but like someone
else said, you can try a tank of 92 octane to see if it helps.
Chris