Quote:
Originally Posted by 911pcars
At that idle speed, short out each cylinder in turn (R&R spark plug wire). It the knocking goes away, usually indicates a con rod bearing issue (excessive clearance). If knock is constant and louder, could be main bearing issues.
Localized hearing with screwdriver, hose, stethoscope, etc. as Phil suggests is also a good idea.
Sherwood
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But . . .be careful not to get zapped. Ask me how I know.
