First I'll describe the car. It's an 03 with custom cams, 3.4 whipple, return fuel system and an 4r70w. I just did a bunch of work to it and am getting it retuned, the tuner just called and said Im having a misfire around 1500 to 3000 rpms. He's thinking it could be the plugs but also tossed out the idea of it being headgakset gone bad. What else would cause a misfire besides those two options.
Misfire
- Thread starter Sprayed2v
- Start date
COP, injector, wire short, valve timing
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Did you put fresh plugs in once you got there? I've found when you load up the plugs with a rich mixture its a downhill battle and they never seem to fully clear or recover.
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