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trop-a-cal's avatar
trop-a-cal
Explorer
Jan 11, 2014

454 Head back on engine started #7 piston noise

Now with full compression on both heads the 43,000 mile 1997 454 vortec has the same noise that it had prior to it shutting down completely. The noise was checked by removing spark plug wire and heari...
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ScottG's avatar
ScottG
Nomad
Jan 11, 2014
Take out the oil pump and take it apart. Check its gears for contamination and damage. I would pull the caps off several rods and mains and check the bearings (bushings?) for contamination. If you find anything in the bearings then the eng is done and needs a complete tear down. Anything less and you will have even more knocking down the road.

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