#1 cylinder keeps fouling: PLUG pics inside...
08-25-2006, 09:25 AM
#21
Easiest thing to do would be put a compression tester on #1 and a couple others and see where you are at. If its low pop the valve cover and make sure everything looks OK, if thats fine leak it down to see why its low.
Sure looks like oil fouling to me but massive fuel fouling (bad injector, low comperssion) will look the same..
Sure looks like oil fouling to me but massive fuel fouling (bad injector, low comperssion) will look the same..
08-25-2006, 09:37 AM
#22
ok guys. went to the shop this morning. he thinks same thing. bad injector. he had alot of great info and was super helpful. we were watching the car on the HPT software.
i had a PO121 TPS activity code.
then while were talking and poking around in the computer it throws
PO108 MAP high voltage...
he says this sound just like the problem he had. car was running bad and throwing all these codes (not triping SES light though) turns out he had a nick in his pink wire that goes to the tps, mas, 02s, map, coils. said he had to pull the harness finally to find it. found the nick repaired it. and she cleaned right out. however thats just part of the prob. obviously ive got a super rich condition on #1 probly cuased by bad injector. ill find out if #3 is now fouled after i moved the injectors.
and another problem... its like a damn snow ball effect...
ran across this article this morning..
https://ls1tech.com/forums/pcm-diagnostics-tuning/564718-oxygen-sensors-lazy-idle-02s-egt-long-tube-headers-closed-loop.html
i have that problem bad. o2s are dead at idle. dumping in 25% on the FTs
how do i solve this? i need more heat apperiently. any suggestions?
ill let yall know if the #3 fouls. then time for new injectors
i had a PO121 TPS activity code.
then while were talking and poking around in the computer it throws
PO108 MAP high voltage...
he says this sound just like the problem he had. car was running bad and throwing all these codes (not triping SES light though) turns out he had a nick in his pink wire that goes to the tps, mas, 02s, map, coils. said he had to pull the harness finally to find it. found the nick repaired it. and she cleaned right out. however thats just part of the prob. obviously ive got a super rich condition on #1 probly cuased by bad injector. ill find out if #3 is now fouled after i moved the injectors.
and another problem... its like a damn snow ball effect...
ran across this article this morning..
https://ls1tech.com/forums/pcm-diagnostics-tuning/564718-oxygen-sensors-lazy-idle-02s-egt-long-tube-headers-closed-loop.html
i have that problem bad. o2s are dead at idle. dumping in 25% on the FTs
how do i solve this? i need more heat apperiently. any suggestions?
ill let yall know if the #3 fouls. then time for new injectors
09-01-2006, 08:20 AM
#24
ok last night i pulled the #3 all excited to find the fouled plug, order my injectors (on sale last day 
) and be done with it. well NO SUCH LUCK!
neither the #3 OR #1 was fouled. if the #1 was still fouling then i would suspect a "fire" problem. but it wasnt. i only drove the car 50 miles after teh injector swap. was that not enough? its missed the whole damn time. (well i should say that ocationally it seemed to be running good as long as u didnt get on it)
so now what?
im so frustrated with this....
u can see the #1 plug (far) is still all black on the inside nipple, but thats just left over from before. i just cleaned adn reinstalled it. but the metal "L" is now white like the others. and the #3 looks exactly the same. both plugs were wet at the BASE of the threads...weird. could be just from washing down the motor though....
possibly the pink wire theory?
:help:
sorry the pics didnt come out
) and be done with it. well NO SUCH LUCK!neither the #3 OR #1 was fouled. if the #1 was still fouling then i would suspect a "fire" problem. but it wasnt. i only drove the car 50 miles after teh injector swap. was that not enough? its missed the whole damn time. (well i should say that ocationally it seemed to be running good as long as u didnt get on it)
so now what?
im so frustrated with this....u can see the #1 plug (far) is still all black on the inside nipple, but thats just left over from before. i just cleaned adn reinstalled it. but the metal "L" is now white like the others. and the #3 looks exactly the same. both plugs were wet at the BASE of the threads...weird. could be just from washing down the motor though....
possibly the pink wire theory?
:help:
sorry the pics didnt come out
Last edited by STANG KILLA SS 2; 09-01-2006 at 08:25 AM.
09-07-2006, 02:36 PM
#26
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Not sure what the pink wire theory is, but the
only problem I've had with real misfires was a
crappy Taylor that wouldn't hold onto the plug.
It might have been a marginal connection that
got put right with all the poking around.
When you say it's missing, have you been able
to look at current misfires with some kind of scan
tool? Try any of the injector balance tests, as
limited as they may be still it might show you
something? Did you ever swap injector positions
to see if the fouling moves with -that-?
only problem I've had with real misfires was a
crappy Taylor that wouldn't hold onto the plug.
It might have been a marginal connection that
got put right with all the poking around.
When you say it's missing, have you been able
to look at current misfires with some kind of scan
tool? Try any of the injector balance tests, as
limited as they may be still it might show you
something? Did you ever swap injector positions
to see if the fouling moves with -that-?
09-11-2006, 09:31 AM
#27
Originally Posted by jimmyblue
Not sure what the pink wire theory is, but the
only problem I've had with real misfires was a
crappy Taylor that wouldn't hold onto the plug.
It might have been a marginal connection that
got put right with all the poking around.
When you say it's missing, have you been able
to look at current misfires with some kind of scan
tool? Try any of the injector balance tests, as
limited as they may be still it might show you
something? Did you ever swap injector positions
to see if the fouling moves with -that-?
only problem I've had with real misfires was a
crappy Taylor that wouldn't hold onto the plug.
It might have been a marginal connection that
got put right with all the poking around.
When you say it's missing, have you been able
to look at current misfires with some kind of scan
tool? Try any of the injector balance tests, as
limited as they may be still it might show you
something? Did you ever swap injector positions
to see if the fouling moves with -that-?
yeah i swaped the injectors. foul didnt move. and even worse it didnt foul again in the old location
and it STILL missesyesterday i swaped coil packs and wires on those 2 cylinders. STILL misses.
next up is try a heat temp gun.... see if i can find a "dead" cylinder 
