<VV> Possible piston slap.
air_cooled63 at yahoo.com
Fri Nov 1 13:01:37 EDT 2019
Yes it sounds like a piston slap. I had a similar problem, but only one piston slap. When the engine was assembled a worn cylinder got mixed in with the non worn cylinders that was worn to 12.5 thousands. 5 thousands is the limit. If you take the spark plug wire off one at a time while running cold and slap sound goes away then you have piston slap. If it still knocks it's most probably bad crankshaft.
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