Mechanics

PINGING/KNOCKING IN ENGINE WHEN IDLING

1997 Plymouth Neon • 168,000 miles

Pinging/knocking noise in engine even when idling
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SueBee
November 13, 2011.



The cams may be wiped or there is a problem with the valvetrain. If the thiming belt has none been seriviced, it would most likely be that.