Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi . Thank you for asking your question on JustAnswer.is the cam worn out? have you checked compresion?Thank you again for trusting us with your problem. John aka eauto
how many miles....the old gm cams did delaminate
i would check valve train operation....any motor noise
bad cams are common for back fire...if the valves on a certain cylinder has less or no travel it would point to a rounded cam lobe....but that serious teardown ..pulling valve covers is way easier....no spark now?
i can look not off the top of my head....454?