• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

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01GrandPrixTURBOGT

01GrandPrixTURBOGT

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I just recently top swapped my grand prix gt and all was good for a day. i had a rocker pop off so i had a cylinder 6 misfire. Fixed that now i have a random one. i no its cylinders 2 and 3 cause i had a friend at gm use a scanner that showed which cylinders were missing. I have brand new autolight 104s gapped .55. New wires, coils and i have tried different icms. I have also tried moving fuel injectors around but it doesnt seem to be working because when i pull the injectors of the cylinders the idle doesn't change. But when i swapped them then pulled the suspected injectors off the idle dropped and got ruff so i wouldn't think they are bad. Compression check was good. Fuel pressure was good. Anyone else had this problem and found out why. Could it be my ZZP pcm tune.
 


any other mods?

is it knocking?

If you're unplugging/swapping the injector and nothing is changing then I'd try a new plug or check the wiring on the injectors that aren't firing.
 


Well I figured it out. I put the old plugs in and it runs better but sputters if giving to much gas. I had autolite 104 gapped at 56. My old plugs that are in now are gapped 50. I was just wondering am I running to rich and fouling plugs or did I just have them gapped to much.
 
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