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Reply To: Chevy vortec 5.3 Check engine light: rough idle and misfires

#784892
MLockheed
Participant

If its an afm motor, I would say ur gonna want to check for lifter failure. Smoke coming out the tailpipe can be anything from moisture accumulation in the exhaust or crankcase (from short drives constantly) or something more serious like burning oil or coolant

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