Dropping MPG
#61
Guest
Posts: n/a
Re: Dropping MPG
Hi Will,
It is mind boggling that's only difference between the fifteen and
the optional nineteen tank, and that they are still doing it for the
TJs: http://www.gottrail.com/TJ/TJfueltankconversion.html Must be a
Kraut thing.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> I found out early on that once the pump stops my MJ will hold just
> short of 4 more gallons if I trickle it in until the filler hose is
> full - but only if it's on a level surface. I keep my mileage figures
> using a boxcar average of the last 4 tanks which gives me a much
> better trend indicator..
>
> One of these days I'll get ambitious and see if that tank has one of
> those over-long vent hoses to make it the smaller capacity tank like
> the YJ had but until then I always figure any one fill up may be a
> "full tank" minus a gallon or two.
It is mind boggling that's only difference between the fifteen and
the optional nineteen tank, and that they are still doing it for the
TJs: http://www.gottrail.com/TJ/TJfueltankconversion.html Must be a
Kraut thing.
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/
Will Honea wrote:
>
> I found out early on that once the pump stops my MJ will hold just
> short of 4 more gallons if I trickle it in until the filler hose is
> full - but only if it's on a level surface. I keep my mileage figures
> using a boxcar average of the last 4 tanks which gives me a much
> better trend indicator..
>
> One of these days I'll get ambitious and see if that tank has one of
> those over-long vent hoses to make it the smaller capacity tank like
> the YJ had but until then I always figure any one fill up may be a
> "full tank" minus a gallon or two.
#62
Guest
Posts: n/a
Re: Dropping MPG
Billy ray, not only will the mileage drop, but it will quickly start
missing at idle with those fancy plugs in it. 4 mini posts just don't
produce a nice fat spark the 4.0 likes it would seem. Same for the
'splitfires'.
I have fixed a whole bunch of bad idles and bad mileage by simply
tossing the 'new' bosch plugs in the trash.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
billy ray wrote:
>
> Kevin,
>
> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>
> Some people prefer copper plugs, in that case I use the Bosch Super # 7562s
>
> I started with the Bosch Supers about 30 years ago and the regular Platinums
> about 20 years ago and I've never had any reason to change back to Champions
> (or any other brand) Everyone has their personal preference though.
>
> I've considered getting the +4s next time, are you saying the mileage
> dropped just after changing plugs?
>
> Bosch guarantees the plugs to run superior to other brands and will refund
> your money
> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>
> You might possibly have leaking or sticky injectors
> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>
> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on Motor
> Week recommends adding a can of cleaner to a full tank of gasoline and
> running that tank as low as you dare, refilling with just gasoline and
> running that tank as low as you dare, then adding the cleaner to a second
> tank and running that tank as low as you dare. Brands I have used and
> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron Cleaner
> (not the Cleaner with Techron)
>
> Throttle Body Cleaning: All this requires is a can of sensor safe spray
> cleaner and an old toothbrush.
> http://www.imagestation.com/album/pi...?id=2122181169
>
> What vacuum reading do you get in Neutral or Park? Your 16 inches is just a
> tad low, recheck the idle in park and also check for a vacuum leak.
>
> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
> >
> > I would find it strange that the Bosch would not work in my 4.0L but
> > stranger things have been known to happen.
> >
> > Any recomendations on plugs for a 4.0L ?
> > Or plugs to avoid ?
> >
> > Kevin
> >
missing at idle with those fancy plugs in it. 4 mini posts just don't
produce a nice fat spark the 4.0 likes it would seem. Same for the
'splitfires'.
I have fixed a whole bunch of bad idles and bad mileage by simply
tossing the 'new' bosch plugs in the trash.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
billy ray wrote:
>
> Kevin,
>
> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>
> Some people prefer copper plugs, in that case I use the Bosch Super # 7562s
>
> I started with the Bosch Supers about 30 years ago and the regular Platinums
> about 20 years ago and I've never had any reason to change back to Champions
> (or any other brand) Everyone has their personal preference though.
>
> I've considered getting the +4s next time, are you saying the mileage
> dropped just after changing plugs?
>
> Bosch guarantees the plugs to run superior to other brands and will refund
> your money
> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>
> You might possibly have leaking or sticky injectors
> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>
> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on Motor
> Week recommends adding a can of cleaner to a full tank of gasoline and
> running that tank as low as you dare, refilling with just gasoline and
> running that tank as low as you dare, then adding the cleaner to a second
> tank and running that tank as low as you dare. Brands I have used and
> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron Cleaner
> (not the Cleaner with Techron)
>
> Throttle Body Cleaning: All this requires is a can of sensor safe spray
> cleaner and an old toothbrush.
> http://www.imagestation.com/album/pi...?id=2122181169
>
> What vacuum reading do you get in Neutral or Park? Your 16 inches is just a
> tad low, recheck the idle in park and also check for a vacuum leak.
>
> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
> >
> > I would find it strange that the Bosch would not work in my 4.0L but
> > stranger things have been known to happen.
> >
> > Any recomendations on plugs for a 4.0L ?
> > Or plugs to avoid ?
> >
> > Kevin
> >
#63
Guest
Posts: n/a
Re: Dropping MPG
Billy ray, not only will the mileage drop, but it will quickly start
missing at idle with those fancy plugs in it. 4 mini posts just don't
produce a nice fat spark the 4.0 likes it would seem. Same for the
'splitfires'.
I have fixed a whole bunch of bad idles and bad mileage by simply
tossing the 'new' bosch plugs in the trash.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
billy ray wrote:
>
> Kevin,
>
> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>
> Some people prefer copper plugs, in that case I use the Bosch Super # 7562s
>
> I started with the Bosch Supers about 30 years ago and the regular Platinums
> about 20 years ago and I've never had any reason to change back to Champions
> (or any other brand) Everyone has their personal preference though.
>
> I've considered getting the +4s next time, are you saying the mileage
> dropped just after changing plugs?
>
> Bosch guarantees the plugs to run superior to other brands and will refund
> your money
> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>
> You might possibly have leaking or sticky injectors
> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>
> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on Motor
> Week recommends adding a can of cleaner to a full tank of gasoline and
> running that tank as low as you dare, refilling with just gasoline and
> running that tank as low as you dare, then adding the cleaner to a second
> tank and running that tank as low as you dare. Brands I have used and
> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron Cleaner
> (not the Cleaner with Techron)
>
> Throttle Body Cleaning: All this requires is a can of sensor safe spray
> cleaner and an old toothbrush.
> http://www.imagestation.com/album/pi...?id=2122181169
>
> What vacuum reading do you get in Neutral or Park? Your 16 inches is just a
> tad low, recheck the idle in park and also check for a vacuum leak.
>
> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
> >
> > I would find it strange that the Bosch would not work in my 4.0L but
> > stranger things have been known to happen.
> >
> > Any recomendations on plugs for a 4.0L ?
> > Or plugs to avoid ?
> >
> > Kevin
> >
missing at idle with those fancy plugs in it. 4 mini posts just don't
produce a nice fat spark the 4.0 likes it would seem. Same for the
'splitfires'.
I have fixed a whole bunch of bad idles and bad mileage by simply
tossing the 'new' bosch plugs in the trash.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
billy ray wrote:
>
> Kevin,
>
> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>
> Some people prefer copper plugs, in that case I use the Bosch Super # 7562s
>
> I started with the Bosch Supers about 30 years ago and the regular Platinums
> about 20 years ago and I've never had any reason to change back to Champions
> (or any other brand) Everyone has their personal preference though.
>
> I've considered getting the +4s next time, are you saying the mileage
> dropped just after changing plugs?
>
> Bosch guarantees the plugs to run superior to other brands and will refund
> your money
> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>
> You might possibly have leaking or sticky injectors
> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>
> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on Motor
> Week recommends adding a can of cleaner to a full tank of gasoline and
> running that tank as low as you dare, refilling with just gasoline and
> running that tank as low as you dare, then adding the cleaner to a second
> tank and running that tank as low as you dare. Brands I have used and
> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron Cleaner
> (not the Cleaner with Techron)
>
> Throttle Body Cleaning: All this requires is a can of sensor safe spray
> cleaner and an old toothbrush.
> http://www.imagestation.com/album/pi...?id=2122181169
>
> What vacuum reading do you get in Neutral or Park? Your 16 inches is just a
> tad low, recheck the idle in park and also check for a vacuum leak.
>
> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
> >
> > I would find it strange that the Bosch would not work in my 4.0L but
> > stranger things have been known to happen.
> >
> > Any recomendations on plugs for a 4.0L ?
> > Or plugs to avoid ?
> >
> > Kevin
> >
#64
Guest
Posts: n/a
Re: Dropping MPG
Billy ray, not only will the mileage drop, but it will quickly start
missing at idle with those fancy plugs in it. 4 mini posts just don't
produce a nice fat spark the 4.0 likes it would seem. Same for the
'splitfires'.
I have fixed a whole bunch of bad idles and bad mileage by simply
tossing the 'new' bosch plugs in the trash.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
billy ray wrote:
>
> Kevin,
>
> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>
> Some people prefer copper plugs, in that case I use the Bosch Super # 7562s
>
> I started with the Bosch Supers about 30 years ago and the regular Platinums
> about 20 years ago and I've never had any reason to change back to Champions
> (or any other brand) Everyone has their personal preference though.
>
> I've considered getting the +4s next time, are you saying the mileage
> dropped just after changing plugs?
>
> Bosch guarantees the plugs to run superior to other brands and will refund
> your money
> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>
> You might possibly have leaking or sticky injectors
> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>
> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on Motor
> Week recommends adding a can of cleaner to a full tank of gasoline and
> running that tank as low as you dare, refilling with just gasoline and
> running that tank as low as you dare, then adding the cleaner to a second
> tank and running that tank as low as you dare. Brands I have used and
> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron Cleaner
> (not the Cleaner with Techron)
>
> Throttle Body Cleaning: All this requires is a can of sensor safe spray
> cleaner and an old toothbrush.
> http://www.imagestation.com/album/pi...?id=2122181169
>
> What vacuum reading do you get in Neutral or Park? Your 16 inches is just a
> tad low, recheck the idle in park and also check for a vacuum leak.
>
> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
> >
> > I would find it strange that the Bosch would not work in my 4.0L but
> > stranger things have been known to happen.
> >
> > Any recomendations on plugs for a 4.0L ?
> > Or plugs to avoid ?
> >
> > Kevin
> >
missing at idle with those fancy plugs in it. 4 mini posts just don't
produce a nice fat spark the 4.0 likes it would seem. Same for the
'splitfires'.
I have fixed a whole bunch of bad idles and bad mileage by simply
tossing the 'new' bosch plugs in the trash.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)
billy ray wrote:
>
> Kevin,
>
> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>
> Some people prefer copper plugs, in that case I use the Bosch Super # 7562s
>
> I started with the Bosch Supers about 30 years ago and the regular Platinums
> about 20 years ago and I've never had any reason to change back to Champions
> (or any other brand) Everyone has their personal preference though.
>
> I've considered getting the +4s next time, are you saying the mileage
> dropped just after changing plugs?
>
> Bosch guarantees the plugs to run superior to other brands and will refund
> your money
> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>
> You might possibly have leaking or sticky injectors
> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>
> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on Motor
> Week recommends adding a can of cleaner to a full tank of gasoline and
> running that tank as low as you dare, refilling with just gasoline and
> running that tank as low as you dare, then adding the cleaner to a second
> tank and running that tank as low as you dare. Brands I have used and
> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron Cleaner
> (not the Cleaner with Techron)
>
> Throttle Body Cleaning: All this requires is a can of sensor safe spray
> cleaner and an old toothbrush.
> http://www.imagestation.com/album/pi...?id=2122181169
>
> What vacuum reading do you get in Neutral or Park? Your 16 inches is just a
> tad low, recheck the idle in park and also check for a vacuum leak.
>
> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
> >
> > I would find it strange that the Bosch would not work in my 4.0L but
> > stranger things have been known to happen.
> >
> > Any recomendations on plugs for a 4.0L ?
> > Or plugs to avoid ?
> >
> > Kevin
> >
#65
Guest
Posts: n/a
Re: Dropping MPG
The regular Bosch Platinum plugs just have the one post, just like a regular
spark plug. The only difference I know of is the center electrode down
where it fires is platinum instead of copper.
http://i112.photobucket.com/albums/n...06/Plat153.jpg
Seeing how I change plugs every 2 years anyway there probably isn't much
justification for the platinum....
If the +4s are causing him a rough idle Bosch will buy them back
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:452B9CCC.D1CAACBE@sympatico.ca...
> Billy ray, not only will the mileage drop, but it will quickly start
> missing at idle with those fancy plugs in it. 4 mini posts just don't
> produce a nice fat spark the 4.0 likes it would seem. Same for the
> 'splitfires'.
>
> I have fixed a whole bunch of bad idles and bad mileage by simply
> tossing the 'new' bosch plugs in the trash.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> billy ray wrote:
>>
>> Kevin,
>>
>> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
>> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>>
>> Some people prefer copper plugs, in that case I use the Bosch Super #
>> 7562s
>>
>> I started with the Bosch Supers about 30 years ago and the regular
>> Platinums
>> about 20 years ago and I've never had any reason to change back to
>> Champions
>> (or any other brand) Everyone has their personal preference though.
>>
>> I've considered getting the +4s next time, are you saying the mileage
>> dropped just after changing plugs?
>>
>> Bosch guarantees the plugs to run superior to other brands and will
>> refund
>> your money
>> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>>
>> You might possibly have leaking or sticky injectors
>> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
>> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>>
>> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on
>> Motor
>> Week recommends adding a can of cleaner to a full tank of gasoline and
>> running that tank as low as you dare, refilling with just gasoline and
>> running that tank as low as you dare, then adding the cleaner to a second
>> tank and running that tank as low as you dare. Brands I have used and
>> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron
>> Cleaner
>> (not the Cleaner with Techron)
>>
>> Throttle Body Cleaning: All this requires is a can of sensor safe spray
>> cleaner and an old toothbrush.
>> http://www.imagestation.com/album/pi...?id=2122181169
>>
>> What vacuum reading do you get in Neutral or Park? Your 16 inches is
>> just a
>> tad low, recheck the idle in park and also check for a vacuum leak.
>>
>> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
>> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
>> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
>> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
>> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
>> >
>> > I would find it strange that the Bosch would not work in my 4.0L but
>> > stranger things have been known to happen.
>> >
>> > Any recomendations on plugs for a 4.0L ?
>> > Or plugs to avoid ?
>> >
>> > Kevin
>> >
spark plug. The only difference I know of is the center electrode down
where it fires is platinum instead of copper.
http://i112.photobucket.com/albums/n...06/Plat153.jpg
Seeing how I change plugs every 2 years anyway there probably isn't much
justification for the platinum....
If the +4s are causing him a rough idle Bosch will buy them back
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:452B9CCC.D1CAACBE@sympatico.ca...
> Billy ray, not only will the mileage drop, but it will quickly start
> missing at idle with those fancy plugs in it. 4 mini posts just don't
> produce a nice fat spark the 4.0 likes it would seem. Same for the
> 'splitfires'.
>
> I have fixed a whole bunch of bad idles and bad mileage by simply
> tossing the 'new' bosch plugs in the trash.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> billy ray wrote:
>>
>> Kevin,
>>
>> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
>> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>>
>> Some people prefer copper plugs, in that case I use the Bosch Super #
>> 7562s
>>
>> I started with the Bosch Supers about 30 years ago and the regular
>> Platinums
>> about 20 years ago and I've never had any reason to change back to
>> Champions
>> (or any other brand) Everyone has their personal preference though.
>>
>> I've considered getting the +4s next time, are you saying the mileage
>> dropped just after changing plugs?
>>
>> Bosch guarantees the plugs to run superior to other brands and will
>> refund
>> your money
>> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>>
>> You might possibly have leaking or sticky injectors
>> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
>> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>>
>> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on
>> Motor
>> Week recommends adding a can of cleaner to a full tank of gasoline and
>> running that tank as low as you dare, refilling with just gasoline and
>> running that tank as low as you dare, then adding the cleaner to a second
>> tank and running that tank as low as you dare. Brands I have used and
>> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron
>> Cleaner
>> (not the Cleaner with Techron)
>>
>> Throttle Body Cleaning: All this requires is a can of sensor safe spray
>> cleaner and an old toothbrush.
>> http://www.imagestation.com/album/pi...?id=2122181169
>>
>> What vacuum reading do you get in Neutral or Park? Your 16 inches is
>> just a
>> tad low, recheck the idle in park and also check for a vacuum leak.
>>
>> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
>> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
>> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
>> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
>> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
>> >
>> > I would find it strange that the Bosch would not work in my 4.0L but
>> > stranger things have been known to happen.
>> >
>> > Any recomendations on plugs for a 4.0L ?
>> > Or plugs to avoid ?
>> >
>> > Kevin
>> >
#66
Guest
Posts: n/a
Re: Dropping MPG
The regular Bosch Platinum plugs just have the one post, just like a regular
spark plug. The only difference I know of is the center electrode down
where it fires is platinum instead of copper.
http://i112.photobucket.com/albums/n...06/Plat153.jpg
Seeing how I change plugs every 2 years anyway there probably isn't much
justification for the platinum....
If the +4s are causing him a rough idle Bosch will buy them back
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:452B9CCC.D1CAACBE@sympatico.ca...
> Billy ray, not only will the mileage drop, but it will quickly start
> missing at idle with those fancy plugs in it. 4 mini posts just don't
> produce a nice fat spark the 4.0 likes it would seem. Same for the
> 'splitfires'.
>
> I have fixed a whole bunch of bad idles and bad mileage by simply
> tossing the 'new' bosch plugs in the trash.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> billy ray wrote:
>>
>> Kevin,
>>
>> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
>> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>>
>> Some people prefer copper plugs, in that case I use the Bosch Super #
>> 7562s
>>
>> I started with the Bosch Supers about 30 years ago and the regular
>> Platinums
>> about 20 years ago and I've never had any reason to change back to
>> Champions
>> (or any other brand) Everyone has their personal preference though.
>>
>> I've considered getting the +4s next time, are you saying the mileage
>> dropped just after changing plugs?
>>
>> Bosch guarantees the plugs to run superior to other brands and will
>> refund
>> your money
>> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>>
>> You might possibly have leaking or sticky injectors
>> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
>> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>>
>> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on
>> Motor
>> Week recommends adding a can of cleaner to a full tank of gasoline and
>> running that tank as low as you dare, refilling with just gasoline and
>> running that tank as low as you dare, then adding the cleaner to a second
>> tank and running that tank as low as you dare. Brands I have used and
>> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron
>> Cleaner
>> (not the Cleaner with Techron)
>>
>> Throttle Body Cleaning: All this requires is a can of sensor safe spray
>> cleaner and an old toothbrush.
>> http://www.imagestation.com/album/pi...?id=2122181169
>>
>> What vacuum reading do you get in Neutral or Park? Your 16 inches is
>> just a
>> tad low, recheck the idle in park and also check for a vacuum leak.
>>
>> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
>> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
>> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
>> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
>> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
>> >
>> > I would find it strange that the Bosch would not work in my 4.0L but
>> > stranger things have been known to happen.
>> >
>> > Any recomendations on plugs for a 4.0L ?
>> > Or plugs to avoid ?
>> >
>> > Kevin
>> >
spark plug. The only difference I know of is the center electrode down
where it fires is platinum instead of copper.
http://i112.photobucket.com/albums/n...06/Plat153.jpg
Seeing how I change plugs every 2 years anyway there probably isn't much
justification for the platinum....
If the +4s are causing him a rough idle Bosch will buy them back
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:452B9CCC.D1CAACBE@sympatico.ca...
> Billy ray, not only will the mileage drop, but it will quickly start
> missing at idle with those fancy plugs in it. 4 mini posts just don't
> produce a nice fat spark the 4.0 likes it would seem. Same for the
> 'splitfires'.
>
> I have fixed a whole bunch of bad idles and bad mileage by simply
> tossing the 'new' bosch plugs in the trash.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> billy ray wrote:
>>
>> Kevin,
>>
>> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
>> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>>
>> Some people prefer copper plugs, in that case I use the Bosch Super #
>> 7562s
>>
>> I started with the Bosch Supers about 30 years ago and the regular
>> Platinums
>> about 20 years ago and I've never had any reason to change back to
>> Champions
>> (or any other brand) Everyone has their personal preference though.
>>
>> I've considered getting the +4s next time, are you saying the mileage
>> dropped just after changing plugs?
>>
>> Bosch guarantees the plugs to run superior to other brands and will
>> refund
>> your money
>> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>>
>> You might possibly have leaking or sticky injectors
>> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
>> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>>
>> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on
>> Motor
>> Week recommends adding a can of cleaner to a full tank of gasoline and
>> running that tank as low as you dare, refilling with just gasoline and
>> running that tank as low as you dare, then adding the cleaner to a second
>> tank and running that tank as low as you dare. Brands I have used and
>> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron
>> Cleaner
>> (not the Cleaner with Techron)
>>
>> Throttle Body Cleaning: All this requires is a can of sensor safe spray
>> cleaner and an old toothbrush.
>> http://www.imagestation.com/album/pi...?id=2122181169
>>
>> What vacuum reading do you get in Neutral or Park? Your 16 inches is
>> just a
>> tad low, recheck the idle in park and also check for a vacuum leak.
>>
>> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
>> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
>> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
>> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
>> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
>> >
>> > I would find it strange that the Bosch would not work in my 4.0L but
>> > stranger things have been known to happen.
>> >
>> > Any recomendations on plugs for a 4.0L ?
>> > Or plugs to avoid ?
>> >
>> > Kevin
>> >
#67
Guest
Posts: n/a
Re: Dropping MPG
The regular Bosch Platinum plugs just have the one post, just like a regular
spark plug. The only difference I know of is the center electrode down
where it fires is platinum instead of copper.
http://i112.photobucket.com/albums/n...06/Plat153.jpg
Seeing how I change plugs every 2 years anyway there probably isn't much
justification for the platinum....
If the +4s are causing him a rough idle Bosch will buy them back
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:452B9CCC.D1CAACBE@sympatico.ca...
> Billy ray, not only will the mileage drop, but it will quickly start
> missing at idle with those fancy plugs in it. 4 mini posts just don't
> produce a nice fat spark the 4.0 likes it would seem. Same for the
> 'splitfires'.
>
> I have fixed a whole bunch of bad idles and bad mileage by simply
> tossing the 'new' bosch plugs in the trash.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> billy ray wrote:
>>
>> Kevin,
>>
>> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
>> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>>
>> Some people prefer copper plugs, in that case I use the Bosch Super #
>> 7562s
>>
>> I started with the Bosch Supers about 30 years ago and the regular
>> Platinums
>> about 20 years ago and I've never had any reason to change back to
>> Champions
>> (or any other brand) Everyone has their personal preference though.
>>
>> I've considered getting the +4s next time, are you saying the mileage
>> dropped just after changing plugs?
>>
>> Bosch guarantees the plugs to run superior to other brands and will
>> refund
>> your money
>> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>>
>> You might possibly have leaking or sticky injectors
>> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
>> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>>
>> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on
>> Motor
>> Week recommends adding a can of cleaner to a full tank of gasoline and
>> running that tank as low as you dare, refilling with just gasoline and
>> running that tank as low as you dare, then adding the cleaner to a second
>> tank and running that tank as low as you dare. Brands I have used and
>> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron
>> Cleaner
>> (not the Cleaner with Techron)
>>
>> Throttle Body Cleaning: All this requires is a can of sensor safe spray
>> cleaner and an old toothbrush.
>> http://www.imagestation.com/album/pi...?id=2122181169
>>
>> What vacuum reading do you get in Neutral or Park? Your 16 inches is
>> just a
>> tad low, recheck the idle in park and also check for a vacuum leak.
>>
>> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
>> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
>> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
>> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
>> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
>> >
>> > I would find it strange that the Bosch would not work in my 4.0L but
>> > stranger things have been known to happen.
>> >
>> > Any recomendations on plugs for a 4.0L ?
>> > Or plugs to avoid ?
>> >
>> > Kevin
>> >
spark plug. The only difference I know of is the center electrode down
where it fires is platinum instead of copper.
http://i112.photobucket.com/albums/n...06/Plat153.jpg
Seeing how I change plugs every 2 years anyway there probably isn't much
justification for the platinum....
If the +4s are causing him a rough idle Bosch will buy them back
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:452B9CCC.D1CAACBE@sympatico.ca...
> Billy ray, not only will the mileage drop, but it will quickly start
> missing at idle with those fancy plugs in it. 4 mini posts just don't
> produce a nice fat spark the 4.0 likes it would seem. Same for the
> 'splitfires'.
>
> I have fixed a whole bunch of bad idles and bad mileage by simply
> tossing the 'new' bosch plugs in the trash.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> billy ray wrote:
>>
>> Kevin,
>>
>> I run with the regular Bosch Platinum plugs (#4203) in my 4 liter and put
>> the regular 4230s in Mark's 4.7 liter and they run flawlessly.
>>
>> Some people prefer copper plugs, in that case I use the Bosch Super #
>> 7562s
>>
>> I started with the Bosch Supers about 30 years ago and the regular
>> Platinums
>> about 20 years ago and I've never had any reason to change back to
>> Champions
>> (or any other brand) Everyone has their personal preference though.
>>
>> I've considered getting the +4s next time, are you saying the mileage
>> dropped just after changing plugs?
>>
>> Bosch guarantees the plugs to run superior to other brands and will
>> refund
>> your money
>> http://jobs.boschusa.com/AutoParts/S...PlatinumPlus4/
>>
>> You might possibly have leaking or sticky injectors
>> http://i112.photobucket.com/albums/n...6/ecb3f58e.jpg
>> http://i112.photobucket.com/albums/n...6/ecb3f549.jpg
>>
>> It wouldn't hurt to clean the fuel system and injectors. Pat Goss on
>> Motor
>> Week recommends adding a can of cleaner to a full tank of gasoline and
>> running that tank as low as you dare, refilling with just gasoline and
>> running that tank as low as you dare, then adding the cleaner to a second
>> tank and running that tank as low as you dare. Brands I have used and
>> recommend include SeaFoam, BG44k, Berryman B12 Chemtool, and Techron
>> Cleaner
>> (not the Cleaner with Techron)
>>
>> Throttle Body Cleaning: All this requires is a can of sensor safe spray
>> cleaner and an old toothbrush.
>> http://www.imagestation.com/album/pi...?id=2122181169
>>
>> What vacuum reading do you get in Neutral or Park? Your 16 inches is
>> just a
>> tad low, recheck the idle in park and also check for a vacuum leak.
>>
>> > OK, engine vacuum is 16 in/hg at idle in gear, I checked the brakes
>> > for sticking calipers, all OK there, I tend to run my tires at 40 psi
>> > year-round. I did however use Bosch Plus 4 plugs when I replaced the
>> > NGKs. I have used Bosch plugs in Honda, Ford BB and SB engines, Chev
>> > L6, Toyota L4, VW L4, Audi V8 and BB Dodge engines with no problems.
>> >
>> > I would find it strange that the Bosch would not work in my 4.0L but
>> > stranger things have been known to happen.
>> >
>> > Any recomendations on plugs for a 4.0L ?
>> > Or plugs to avoid ?
>> >
>> > Kevin
>> >
#68
Guest
Posts: n/a
Re: Dropping MPG
billy ray wrote:
> The regular Bosch Platinum plugs just have the one post, just like a
> regular spark plug. The only difference I know of is the center
> electrode down where it fires is platinum instead of copper.
>
> http://i112.photobucket.com/albums/n...06/Plat153.jpg
>
> Seeing how I change plugs every 2 years anyway there probably isn't
> much justification for the platinum....
>
> If the +4s are causing him a rough idle Bosch will buy them back
I run plain copper spark plugs. Either Champion or Autolite.
Actually I think the Autolite are better made. The fancy plugs
do nothing but waste money. With one exception. The platinum
(non fancy) or Irridium plugs do last a lot longer and don't gap out.
The only real reason to use them is if getting at the plugs is
a pain in the ****. For the I6 it's just too darn easy to change plugs
and looking at the plugs is the best way to catch engine problems.
my .02 quatloos.
--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> The regular Bosch Platinum plugs just have the one post, just like a
> regular spark plug. The only difference I know of is the center
> electrode down where it fires is platinum instead of copper.
>
> http://i112.photobucket.com/albums/n...06/Plat153.jpg
>
> Seeing how I change plugs every 2 years anyway there probably isn't
> much justification for the platinum....
>
> If the +4s are causing him a rough idle Bosch will buy them back
I run plain copper spark plugs. Either Champion or Autolite.
Actually I think the Autolite are better made. The fancy plugs
do nothing but waste money. With one exception. The platinum
(non fancy) or Irridium plugs do last a lot longer and don't gap out.
The only real reason to use them is if getting at the plugs is
a pain in the ****. For the I6 it's just too darn easy to change plugs
and looking at the plugs is the best way to catch engine problems.
my .02 quatloos.
--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
#69
Guest
Posts: n/a
Re: Dropping MPG
billy ray wrote:
> The regular Bosch Platinum plugs just have the one post, just like a
> regular spark plug. The only difference I know of is the center
> electrode down where it fires is platinum instead of copper.
>
> http://i112.photobucket.com/albums/n...06/Plat153.jpg
>
> Seeing how I change plugs every 2 years anyway there probably isn't
> much justification for the platinum....
>
> If the +4s are causing him a rough idle Bosch will buy them back
I run plain copper spark plugs. Either Champion or Autolite.
Actually I think the Autolite are better made. The fancy plugs
do nothing but waste money. With one exception. The platinum
(non fancy) or Irridium plugs do last a lot longer and don't gap out.
The only real reason to use them is if getting at the plugs is
a pain in the ****. For the I6 it's just too darn easy to change plugs
and looking at the plugs is the best way to catch engine problems.
my .02 quatloos.
--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> The regular Bosch Platinum plugs just have the one post, just like a
> regular spark plug. The only difference I know of is the center
> electrode down where it fires is platinum instead of copper.
>
> http://i112.photobucket.com/albums/n...06/Plat153.jpg
>
> Seeing how I change plugs every 2 years anyway there probably isn't
> much justification for the platinum....
>
> If the +4s are causing him a rough idle Bosch will buy them back
I run plain copper spark plugs. Either Champion or Autolite.
Actually I think the Autolite are better made. The fancy plugs
do nothing but waste money. With one exception. The platinum
(non fancy) or Irridium plugs do last a lot longer and don't gap out.
The only real reason to use them is if getting at the plugs is
a pain in the ****. For the I6 it's just too darn easy to change plugs
and looking at the plugs is the best way to catch engine problems.
my .02 quatloos.
--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
#70
Guest
Posts: n/a
Re: Dropping MPG
billy ray wrote:
> The regular Bosch Platinum plugs just have the one post, just like a
> regular spark plug. The only difference I know of is the center
> electrode down where it fires is platinum instead of copper.
>
> http://i112.photobucket.com/albums/n...06/Plat153.jpg
>
> Seeing how I change plugs every 2 years anyway there probably isn't
> much justification for the platinum....
>
> If the +4s are causing him a rough idle Bosch will buy them back
I run plain copper spark plugs. Either Champion or Autolite.
Actually I think the Autolite are better made. The fancy plugs
do nothing but waste money. With one exception. The platinum
(non fancy) or Irridium plugs do last a lot longer and don't gap out.
The only real reason to use them is if getting at the plugs is
a pain in the ****. For the I6 it's just too darn easy to change plugs
and looking at the plugs is the best way to catch engine problems.
my .02 quatloos.
--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!
> The regular Bosch Platinum plugs just have the one post, just like a
> regular spark plug. The only difference I know of is the center
> electrode down where it fires is platinum instead of copper.
>
> http://i112.photobucket.com/albums/n...06/Plat153.jpg
>
> Seeing how I change plugs every 2 years anyway there probably isn't
> much justification for the platinum....
>
> If the +4s are causing him a rough idle Bosch will buy them back
I run plain copper spark plugs. Either Champion or Autolite.
Actually I think the Autolite are better made. The fancy plugs
do nothing but waste money. With one exception. The platinum
(non fancy) or Irridium plugs do last a lot longer and don't gap out.
The only real reason to use them is if getting at the plugs is
a pain in the ****. For the I6 it's just too darn easy to change plugs
and looking at the plugs is the best way to catch engine problems.
my .02 quatloos.
--
-- DougW -- 93 ZJ 4.0 http://revbeergoggles.com
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!