After L32 swap into my GT, I'm getting a crap load of misfires only on #2 and only at idle. I get up to 200 misfires (using aeroforce gauge) while idling and once under load while driving misfires go to 0 and misfires return when back to idle. When motor is warm--it still happens, but amount of misfires appear to go down. Swapped out plug (looked fine-not wet), wire, coil and injector-- no help. Vacuum is steady at 19-20, motor has about 50 k on it and didn't do this before swap--but motor sat for about 4 months (may-sept) in donor car. Took it out on hwy for over an hour-running the piss out of it hoping to get it hot enough to cure it--no luck. So question is...why only at idle? Would a valve issue not misfire all the time? Could a pitted cam lobe cause this? Head gasket? Any ideas out there?
