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Old 04-20-2009, 07:49 PM   #24 (permalink)
Christ
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Herbie - '86 Golf Diesel
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Piston slap is not always detonation. There are several cases of it happening on production vehicles which did not involve detonation at all. The culprit, in most cases, was either worn piston rings or worn wrist pins/rods. Less often, it was an out of round condition in the cylinder's bore.
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