'02 TJ pinging under load
12-10-2003, 07:47 PM
#11
Guest
Posts: n/a
Re: '02 TJ pinging under load
I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed is
usually around 70 mph. Definitely not conservative.
Tom
"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:nxHBb.43820$Bk1.4470@fed1read05...
> How would you characterize your usual daily driving style? Conservative?
> Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
basis?
> Depending on you answer, there could be a reason for the pinging...
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
load.
> > Not knocking, but pinging. It has 35000 miles on it. I put in new
> Champion
> > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> >
> > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> started
> > a couple of months ago.
> >
> > Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> > Ohio) is the problem, but there was absolutely no pinging last winter.
> >
> > Any ideas?
> >
> > Tom
> >
> >
>
>
usually around 70 mph. Definitely not conservative.
Tom
"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:nxHBb.43820$Bk1.4470@fed1read05...
> How would you characterize your usual daily driving style? Conservative?
> Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
basis?
> Depending on you answer, there could be a reason for the pinging...
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
load.
> > Not knocking, but pinging. It has 35000 miles on it. I put in new
> Champion
> > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> >
> > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> started
> > a couple of months ago.
> >
> > Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> > Ohio) is the problem, but there was absolutely no pinging last winter.
> >
> > Any ideas?
> >
> > Tom
> >
> >
>
>
12-10-2003, 07:47 PM
#12
Guest
Posts: n/a
Re: '02 TJ pinging under load
I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed is
usually around 70 mph. Definitely not conservative.
Tom
"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:nxHBb.43820$Bk1.4470@fed1read05...
> How would you characterize your usual daily driving style? Conservative?
> Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
basis?
> Depending on you answer, there could be a reason for the pinging...
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
load.
> > Not knocking, but pinging. It has 35000 miles on it. I put in new
> Champion
> > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> >
> > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> started
> > a couple of months ago.
> >
> > Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> > Ohio) is the problem, but there was absolutely no pinging last winter.
> >
> > Any ideas?
> >
> > Tom
> >
> >
>
>
usually around 70 mph. Definitely not conservative.
Tom
"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:nxHBb.43820$Bk1.4470@fed1read05...
> How would you characterize your usual daily driving style? Conservative?
> Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
basis?
> Depending on you answer, there could be a reason for the pinging...
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
load.
> > Not knocking, but pinging. It has 35000 miles on it. I put in new
> Champion
> > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> >
> > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> started
> > a couple of months ago.
> >
> > Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> > Ohio) is the problem, but there was absolutely no pinging last winter.
> >
> > Any ideas?
> >
> > Tom
> >
> >
>
>
12-10-2003, 07:47 PM
#13
Guest
Posts: n/a
Re: '02 TJ pinging under load
I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed is
usually around 70 mph. Definitely not conservative.
Tom
"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:nxHBb.43820$Bk1.4470@fed1read05...
> How would you characterize your usual daily driving style? Conservative?
> Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
basis?
> Depending on you answer, there could be a reason for the pinging...
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
load.
> > Not knocking, but pinging. It has 35000 miles on it. I put in new
> Champion
> > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> >
> > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> started
> > a couple of months ago.
> >
> > Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> > Ohio) is the problem, but there was absolutely no pinging last winter.
> >
> > Any ideas?
> >
> > Tom
> >
> >
>
>
usually around 70 mph. Definitely not conservative.
Tom
"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:nxHBb.43820$Bk1.4470@fed1read05...
> How would you characterize your usual daily driving style? Conservative?
> Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
basis?
> Depending on you answer, there could be a reason for the pinging...
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
load.
> > Not knocking, but pinging. It has 35000 miles on it. I put in new
> Champion
> > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> >
> > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> started
> > a couple of months ago.
> >
> > Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> > Ohio) is the problem, but there was absolutely no pinging last winter.
> >
> > Any ideas?
> >
> > Tom
> >
> >
>
>
12-10-2003, 07:56 PM
#14
Guest
Posts: n/a
Re: '02 TJ pinging under load
My 5 month old '03 did the same thing recently when it started to get
colder. I suspect the winter gas as well. Using 89 stopped it for me
too. I tried to go back to 87 for a couple of tanks but the pinging came
back. I'm going to just feed it 89 until spring.
I suppose the timing could be adjusted, but then I'd have to change that
back when it gets warmer or deal with the resulting power loss or
excessive emmisions.
mabar wrote:
> My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight load.
> Not knocking, but pinging. It has 35000 miles on it. I put in new Champion
> truck plugs at about 32,000 miles and gapped them correctly to 0.35".
>
> No pinging if I use 89 octane gas, only with 87 octane. Pinging just started
> a couple of months ago.
>
> Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> Ohio) is the problem, but there was absolutely no pinging last winter.
>
> Any ideas?
>
> Tom
>
>
colder. I suspect the winter gas as well. Using 89 stopped it for me
too. I tried to go back to 87 for a couple of tanks but the pinging came
back. I'm going to just feed it 89 until spring.
I suppose the timing could be adjusted, but then I'd have to change that
back when it gets warmer or deal with the resulting power loss or
excessive emmisions.
mabar wrote:
> My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight load.
> Not knocking, but pinging. It has 35000 miles on it. I put in new Champion
> truck plugs at about 32,000 miles and gapped them correctly to 0.35".
>
> No pinging if I use 89 octane gas, only with 87 octane. Pinging just started
> a couple of months ago.
>
> Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> Ohio) is the problem, but there was absolutely no pinging last winter.
>
> Any ideas?
>
> Tom
>
>
12-10-2003, 07:56 PM
#15
Guest
Posts: n/a
Re: '02 TJ pinging under load
My 5 month old '03 did the same thing recently when it started to get
colder. I suspect the winter gas as well. Using 89 stopped it for me
too. I tried to go back to 87 for a couple of tanks but the pinging came
back. I'm going to just feed it 89 until spring.
I suppose the timing could be adjusted, but then I'd have to change that
back when it gets warmer or deal with the resulting power loss or
excessive emmisions.
mabar wrote:
> My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight load.
> Not knocking, but pinging. It has 35000 miles on it. I put in new Champion
> truck plugs at about 32,000 miles and gapped them correctly to 0.35".
>
> No pinging if I use 89 octane gas, only with 87 octane. Pinging just started
> a couple of months ago.
>
> Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> Ohio) is the problem, but there was absolutely no pinging last winter.
>
> Any ideas?
>
> Tom
>
>
colder. I suspect the winter gas as well. Using 89 stopped it for me
too. I tried to go back to 87 for a couple of tanks but the pinging came
back. I'm going to just feed it 89 until spring.
I suppose the timing could be adjusted, but then I'd have to change that
back when it gets warmer or deal with the resulting power loss or
excessive emmisions.
mabar wrote:
> My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight load.
> Not knocking, but pinging. It has 35000 miles on it. I put in new Champion
> truck plugs at about 32,000 miles and gapped them correctly to 0.35".
>
> No pinging if I use 89 octane gas, only with 87 octane. Pinging just started
> a couple of months ago.
>
> Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> Ohio) is the problem, but there was absolutely no pinging last winter.
>
> Any ideas?
>
> Tom
>
>
12-10-2003, 07:56 PM
#16
Guest
Posts: n/a
Re: '02 TJ pinging under load
My 5 month old '03 did the same thing recently when it started to get
colder. I suspect the winter gas as well. Using 89 stopped it for me
too. I tried to go back to 87 for a couple of tanks but the pinging came
back. I'm going to just feed it 89 until spring.
I suppose the timing could be adjusted, but then I'd have to change that
back when it gets warmer or deal with the resulting power loss or
excessive emmisions.
mabar wrote:
> My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight load.
> Not knocking, but pinging. It has 35000 miles on it. I put in new Champion
> truck plugs at about 32,000 miles and gapped them correctly to 0.35".
>
> No pinging if I use 89 octane gas, only with 87 octane. Pinging just started
> a couple of months ago.
>
> Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> Ohio) is the problem, but there was absolutely no pinging last winter.
>
> Any ideas?
>
> Tom
>
>
colder. I suspect the winter gas as well. Using 89 stopped it for me
too. I tried to go back to 87 for a couple of tanks but the pinging came
back. I'm going to just feed it 89 until spring.
I suppose the timing could be adjusted, but then I'd have to change that
back when it gets warmer or deal with the resulting power loss or
excessive emmisions.
mabar wrote:
> My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight load.
> Not knocking, but pinging. It has 35000 miles on it. I put in new Champion
> truck plugs at about 32,000 miles and gapped them correctly to 0.35".
>
> No pinging if I use 89 octane gas, only with 87 octane. Pinging just started
> a couple of months ago.
>
> Runs fine otherwise. I am guessing re-formulated winter gas (Cleveland,
> Ohio) is the problem, but there was absolutely no pinging last winter.
>
> Any ideas?
>
> Tom
>
>
12-10-2003, 09:30 PM
#17
Guest
Posts: n/a
Re: '02 TJ pinging under load
Ok, I was going to suggest that it might have a bit of a carbon build-up in
the combustion chambers if you drive ultra-conservatively. Carbon can cause
pinging by it continuing to glow after the combustion stroke, prematurely
igniting the next cycle's air-fuel mixture. The cure is to either blow the
carbon out by driving ultra-aggressively or cleaning it out with either a
chemical cleaner or carefully and slowly dribbling 12 to 16 ounces of water
into the combustion chamber through the air intake while the engine runs.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:kfOdneXhsPniI0qiRVn-tw@gbronline.com...
> I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed
is
> usually around 70 mph. Definitely not conservative.
>
> Tom
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:nxHBb.43820$Bk1.4470@fed1read05...
> > How would you characterize your usual daily driving style?
Conservative?
> > Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
> basis?
> > Depending on you answer, there could be a reason for the pinging...
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> > news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
> load.
> > > Not knocking, but pinging. It has 35000 miles on it. I put in new
> > Champion
> > > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> > >
> > > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> > started
> > > a couple of months ago.
> > >
> > > Runs fine otherwise. I am guessing re-formulated winter gas
(Cleveland,
> > > Ohio) is the problem, but there was absolutely no pinging last winter.
> > >
> > > Any ideas?
> > >
> > > Tom
> > >
> > >
> >
> >
>
>
the combustion chambers if you drive ultra-conservatively. Carbon can cause
pinging by it continuing to glow after the combustion stroke, prematurely
igniting the next cycle's air-fuel mixture. The cure is to either blow the
carbon out by driving ultra-aggressively or cleaning it out with either a
chemical cleaner or carefully and slowly dribbling 12 to 16 ounces of water
into the combustion chamber through the air intake while the engine runs.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:kfOdneXhsPniI0qiRVn-tw@gbronline.com...
> I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed
is
> usually around 70 mph. Definitely not conservative.
>
> Tom
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:nxHBb.43820$Bk1.4470@fed1read05...
> > How would you characterize your usual daily driving style?
Conservative?
> > Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
> basis?
> > Depending on you answer, there could be a reason for the pinging...
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> > news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
> load.
> > > Not knocking, but pinging. It has 35000 miles on it. I put in new
> > Champion
> > > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> > >
> > > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> > started
> > > a couple of months ago.
> > >
> > > Runs fine otherwise. I am guessing re-formulated winter gas
(Cleveland,
> > > Ohio) is the problem, but there was absolutely no pinging last winter.
> > >
> > > Any ideas?
> > >
> > > Tom
> > >
> > >
> >
> >
>
>
12-10-2003, 09:30 PM
#18
Guest
Posts: n/a
Re: '02 TJ pinging under load
Ok, I was going to suggest that it might have a bit of a carbon build-up in
the combustion chambers if you drive ultra-conservatively. Carbon can cause
pinging by it continuing to glow after the combustion stroke, prematurely
igniting the next cycle's air-fuel mixture. The cure is to either blow the
carbon out by driving ultra-aggressively or cleaning it out with either a
chemical cleaner or carefully and slowly dribbling 12 to 16 ounces of water
into the combustion chamber through the air intake while the engine runs.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:kfOdneXhsPniI0qiRVn-tw@gbronline.com...
> I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed
is
> usually around 70 mph. Definitely not conservative.
>
> Tom
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:nxHBb.43820$Bk1.4470@fed1read05...
> > How would you characterize your usual daily driving style?
Conservative?
> > Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
> basis?
> > Depending on you answer, there could be a reason for the pinging...
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> > news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
> load.
> > > Not knocking, but pinging. It has 35000 miles on it. I put in new
> > Champion
> > > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> > >
> > > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> > started
> > > a couple of months ago.
> > >
> > > Runs fine otherwise. I am guessing re-formulated winter gas
(Cleveland,
> > > Ohio) is the problem, but there was absolutely no pinging last winter.
> > >
> > > Any ideas?
> > >
> > > Tom
> > >
> > >
> >
> >
>
>
the combustion chambers if you drive ultra-conservatively. Carbon can cause
pinging by it continuing to glow after the combustion stroke, prematurely
igniting the next cycle's air-fuel mixture. The cure is to either blow the
carbon out by driving ultra-aggressively or cleaning it out with either a
chemical cleaner or carefully and slowly dribbling 12 to 16 ounces of water
into the combustion chamber through the air intake while the engine runs.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:kfOdneXhsPniI0qiRVn-tw@gbronline.com...
> I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed
is
> usually around 70 mph. Definitely not conservative.
>
> Tom
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:nxHBb.43820$Bk1.4470@fed1read05...
> > How would you characterize your usual daily driving style?
Conservative?
> > Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
> basis?
> > Depending on you answer, there could be a reason for the pinging...
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> > news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
> load.
> > > Not knocking, but pinging. It has 35000 miles on it. I put in new
> > Champion
> > > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> > >
> > > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> > started
> > > a couple of months ago.
> > >
> > > Runs fine otherwise. I am guessing re-formulated winter gas
(Cleveland,
> > > Ohio) is the problem, but there was absolutely no pinging last winter.
> > >
> > > Any ideas?
> > >
> > > Tom
> > >
> > >
> >
> >
>
>
12-10-2003, 09:30 PM
#19
Guest
Posts: n/a
Re: '02 TJ pinging under load
Ok, I was going to suggest that it might have a bit of a carbon build-up in
the combustion chambers if you drive ultra-conservatively. Carbon can cause
pinging by it continuing to glow after the combustion stroke, prematurely
igniting the next cycle's air-fuel mixture. The cure is to either blow the
carbon out by driving ultra-aggressively or cleaning it out with either a
chemical cleaner or carefully and slowly dribbling 12 to 16 ounces of water
into the combustion chamber through the air intake while the engine runs.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:kfOdneXhsPniI0qiRVn-tw@gbronline.com...
> I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed
is
> usually around 70 mph. Definitely not conservative.
>
> Tom
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:nxHBb.43820$Bk1.4470@fed1read05...
> > How would you characterize your usual daily driving style?
Conservative?
> > Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
> basis?
> > Depending on you answer, there could be a reason for the pinging...
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> > news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
> load.
> > > Not knocking, but pinging. It has 35000 miles on it. I put in new
> > Champion
> > > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> > >
> > > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> > started
> > > a couple of months ago.
> > >
> > > Runs fine otherwise. I am guessing re-formulated winter gas
(Cleveland,
> > > Ohio) is the problem, but there was absolutely no pinging last winter.
> > >
> > > Any ideas?
> > >
> > > Tom
> > >
> > >
> >
> >
>
>
the combustion chambers if you drive ultra-conservatively. Carbon can cause
pinging by it continuing to glow after the combustion stroke, prematurely
igniting the next cycle's air-fuel mixture. The cure is to either blow the
carbon out by driving ultra-aggressively or cleaning it out with either a
chemical cleaner or carefully and slowly dribbling 12 to 16 ounces of water
into the combustion chamber through the air intake while the engine runs.
Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:kfOdneXhsPniI0qiRVn-tw@gbronline.com...
> I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed
is
> usually around 70 mph. Definitely not conservative.
>
> Tom
>
> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:nxHBb.43820$Bk1.4470@fed1read05...
> > How would you characterize your usual daily driving style?
Conservative?
> > Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
> basis?
> > Depending on you answer, there could be a reason for the pinging...
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> >
> > "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> > news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
> load.
> > > Not knocking, but pinging. It has 35000 miles on it. I put in new
> > Champion
> > > truck plugs at about 32,000 miles and gapped them correctly to 0.35".
> > >
> > > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> > started
> > > a couple of months ago.
> > >
> > > Runs fine otherwise. I am guessing re-formulated winter gas
(Cleveland,
> > > Ohio) is the problem, but there was absolutely no pinging last winter.
> > >
> > > Any ideas?
> > >
> > > Tom
> > >
> > >
> >
> >
>
>
12-12-2003, 08:51 AM
#20
Guest
Posts: n/a
Re: '02 TJ pinging under load
Thanks everyone for your suggestions. I think it might just be the
re-formulated winter gas. On some tanks it pings, on others it doesn't.
Thanks,
Tom
"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:YEQBb.28$kB6.25@fed1read05...
> Ok, I was going to suggest that it might have a bit of a carbon build-up
in
> the combustion chambers if you drive ultra-conservatively. Carbon can
cause
> pinging by it continuing to glow after the combustion stroke, prematurely
> igniting the next cycle's air-fuel mixture. The cure is to either blow
the
> carbon out by driving ultra-aggressively or cleaning it out with either a
> chemical cleaner or carefully and slowly dribbling 12 to 16 ounces of
water
> into the combustion chamber through the air intake while the engine runs.
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> news:kfOdneXhsPniI0qiRVn-tw@gbronline.com...
> > I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed
> is
> > usually around 70 mph. Definitely not conservative.
> >
> > Tom
> >
> > "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> > news:nxHBb.43820$Bk1.4470@fed1read05...
> > > How would you characterize your usual daily driving style?
> Conservative?
> > > Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
> > basis?
> > > Depending on you answer, there could be a reason for the pinging...
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > KC6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> > > news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > > > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
> > load.
> > > > Not knocking, but pinging. It has 35000 miles on it. I put in new
> > > Champion
> > > > truck plugs at about 32,000 miles and gapped them correctly to
0.35".
> > > >
> > > > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> > > started
> > > > a couple of months ago.
> > > >
> > > > Runs fine otherwise. I am guessing re-formulated winter gas
> (Cleveland,
> > > > Ohio) is the problem, but there was absolutely no pinging last
winter.
> > > >
> > > > Any ideas?
> > > >
> > > > Tom
> > > >
> > > >
> > >
> > >
> >
> >
>
>
re-formulated winter gas. On some tanks it pings, on others it doesn't.
Thanks,
Tom
"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:YEQBb.28$kB6.25@fed1read05...
> Ok, I was going to suggest that it might have a bit of a carbon build-up
in
> the combustion chambers if you drive ultra-conservatively. Carbon can
cause
> pinging by it continuing to glow after the combustion stroke, prematurely
> igniting the next cycle's air-fuel mixture. The cure is to either blow
the
> carbon out by driving ultra-aggressively or cleaning it out with either a
> chemical cleaner or carefully and slowly dribbling 12 to 16 ounces of
water
> into the combustion chamber through the air intake while the engine runs.
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
>
> "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> news:kfOdneXhsPniI0qiRVn-tw@gbronline.com...
> > I guess moderate. 1/2 city, 1/2 freeway. Some fast starts. Freeway speed
> is
> > usually around 70 mph. Definitely not conservative.
> >
> > Tom
> >
> > "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> > news:nxHBb.43820$Bk1.4470@fed1read05...
> > > How would you characterize your usual daily driving style?
> Conservative?
> > > Maybe ultra-conservative? Moderate? Hard-accelerations on a regular
> > basis?
> > > Depending on you answer, there could be a reason for the pinging...
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > To email, remove 'me' from my email address
> > > KC6TAY, PP-ASEL
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > >
> > > "mabar" <mabar@NOSPAMgbronline.com> wrote in message
> > > news:OoqdnWPSacy_2UqiRVn-sA@gbronline.com...
> > > > My '02 TJ, 6-cyl, auto is pinging under load. Sometimes only slight
> > load.
> > > > Not knocking, but pinging. It has 35000 miles on it. I put in new
> > > Champion
> > > > truck plugs at about 32,000 miles and gapped them correctly to
0.35".
> > > >
> > > > No pinging if I use 89 octane gas, only with 87 octane. Pinging just
> > > started
> > > > a couple of months ago.
> > > >
> > > > Runs fine otherwise. I am guessing re-formulated winter gas
> (Cleveland,
> > > > Ohio) is the problem, but there was absolutely no pinging last
winter.
> > > >
> > > > Any ideas?
> > > >
> > > > Tom
> > > >
> > > >
> > >
> > >
> >
> >
>
>