Misfire Help
06-18-2008, 11:13 PM
#26
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it just happens, my friend had a short but i forgot what his problems was. all i remember is that his car ran like ****
06-18-2008, 11:13 PM
#27
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well u do that and i'll switch the harnesses and we'll go from there man
06-18-2008, 11:14 PM
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06-18-2008, 11:14 PM
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06-18-2008, 11:15 PM
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then its not ur harness lol, cuz my car runs liek ass at WOT and fine at daily driving, just as long as i dont give it past half throttle!
Last edited by 04redline0124; 06-18-2008 at 11:16 PM. Reason: Automerged Doublepost
06-18-2008, 11:17 PM
#31
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read post 9 though man. i think it has somethign to do with the injectors
mybe i'll try opening the spark plug gap to like .037 and see how that does
will do i just dont wanna waste money on crap that is not my problem..i always had a thing inside my head about something with the injectors..but there was no point to pull them, because there really isnt nothing to check
then its not ur harness lol, cuz my car runs liek ass at WOT and fine at daily driving, just as long as i dont give it past half throttle!
then its not ur harness lol, cuz my car runs liek ass at WOT and fine at daily driving, just as long as i dont give it past half throttle!
Last edited by Altiery54; 06-18-2008 at 11:17 PM. Reason: Automerged Doublepost
06-18-2008, 11:18 PM
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it might be a faulty injector, not the harness if its only a certain injector
06-18-2008, 11:20 PM
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06-18-2008, 11:23 PM
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06-18-2008, 11:27 PM
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06-18-2008, 11:44 PM
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06-19-2008, 06:40 AM
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ok....all this stuff would make sense if the misfire wasnt following the injector....he threw the injector out of c1 in to c2 and the misfire followed to c2......has to be the injector! the harness wouldnt cause that, and if it did, it wouldnt follow the injector. and as i said, due to the fact that it is under 2k rpm, im guessing the injector isnt opening wide enough at low idc's....60's are big, and i would guess that at low idc's (less than 5 percent) they arent as precise as say, 42's at the same idc due to the larger appature. This would be causing it to run lean, and thus misfire.....if it was running rich there would be fouling on the plug....
06-19-2008, 06:46 AM
#43
Who did you buy your Injectors from? You need to find someone who can flow test them.
I'll put $20 on the fact that the one that is causing the problem isn't flowing correctly at Idle-like speeds.
You problem has nothing to do with spark or ignition. It is solely a FUEL INJECTOR PROBLEM. You proved that when you moved Cyl 1's injector to Cyl 2 and the problem followed.
I'll put $20 on the fact that the one that is causing the problem isn't flowing correctly at Idle-like speeds.
You problem has nothing to do with spark or ignition. It is solely a FUEL INJECTOR PROBLEM. You proved that when you moved Cyl 1's injector to Cyl 2 and the problem followed.
06-19-2008, 06:51 AM
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Who did you buy your Injectors from? You need to find someone who can flow test them.
I'll put $20 on the fact that the one that is causing the problem isn't flowing correctly at Idle-like speeds.
You problem has nothing to do with spark or ignition. It is solely a FUEL INJECTOR PROBLEM. You proved that when you moved Cyl 1's injector to Cyl 2 and the problem followed.
I'll put $20 on the fact that the one that is causing the problem isn't flowing correctly at Idle-like speeds.
You problem has nothing to do with spark or ignition. It is solely a FUEL INJECTOR PROBLEM. You proved that when you moved Cyl 1's injector to Cyl 2 and the problem followed.
06-19-2008, 07:07 AM
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Who did you buy your Injectors from? You need to find someone who can flow test them.
I'll put $20 on the fact that the one that is causing the problem isn't flowing correctly at Idle-like speeds.
You problem has nothing to do with spark or ignition. It is solely a FUEL INJECTOR PROBLEM. You proved that when you moved Cyl 1's injector to Cyl 2 and the problem followed.
I'll put $20 on the fact that the one that is causing the problem isn't flowing correctly at Idle-like speeds.
You problem has nothing to do with spark or ignition. It is solely a FUEL INJECTOR PROBLEM. You proved that when you moved Cyl 1's injector to Cyl 2 and the problem followed.
...i have that same theory
06-19-2008, 09:30 AM
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Hmm.. Not much progress yet. I dont think it is a mechanical problem, like something being wrong with the car, mostly because I have heard of others with this same problem. The reason I am running towards it running rich at idle rather than lean is because when mine use to do it really bad, the fuel would almost start to puddle in the cylinders 
This is how the dealership almost killed my engine, you know its a bad sign when they pull out wet spark plugs. Lol
Also, another reason is because under WOT condition, the air is just forcing out all of the extra fuel that is being put in at idle, hence why it gets rid of all the misfires that are standing as well.
I notice in your signature you have a Wideband, is it hooked up yet? What are you seeing at idle?
This is how the dealership almost killed my engine, you know its a bad sign when they pull out wet spark plugs. LolAlso, another reason is because under WOT condition, the air is just forcing out all of the extra fuel that is being put in at idle, hence why it gets rid of all the misfires that are standing as well.
I notice in your signature you have a Wideband, is it hooked up yet? What are you seeing at idle?
06-19-2008, 09:46 AM
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ok....all this stuff would make sense if the misfire wasnt following the injector....he threw the injector out of c1 in to c2 and the misfire followed to c2......has to be the injector! the harness wouldnt cause that, and if it did, it wouldnt follow the injector. and as i said, due to the fact that it is under 2k rpm, im guessing the injector isnt opening wide enough at low idc's....60's are big, and i would guess that at low idc's (less than 5 percent) they arent as precise as say, 42's at the same idc due to the larger appature. This would be causing it to run lean, and thus misfire.....if it was running rich there would be fouling on the plug....
its your injector and id put money on it. Contact zzp and get it replaced.
harness is fine,
unless your other cylinders are misfiring your gap is fine.
.37 is a good gap.