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Home >> Mercury >> 1993 >> Villager LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/O Codes >> Symptoms >> Engine Noise >> Knock

Engine Noise: Knock

Perform the following:

Check for worn connecting rod/main bearings.
Check for loose piston pins.
Check piston-to-cylinder bore clearance.
Knock (Detonation); see SPARK KNOCK.

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