Just added comp cam 274 to a 5.7 with 392 intake and headers, and i'm getting a p0304 code. Tried new plugs and coil but it came back and is running rough at low rpm. I know fuel injector is next to check, but how would i know if its possibly the pcm and or maybe a messed up push rod?
Hello, good friend, mainly ruling out a mechanical problem, it could be the PCM, do a test, open your scan and activate misfire history, accelerate it stopped, if it gives misfire, you can resort to checking the fuel distribution system or your PCM has problems
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thanks for the reply
we are at your serviceOriginally Posted by durangoRTRob
If you want, write down my contact number to follow up on that problem.
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most likely a push rod, if it just popped up after the cam install
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