Re: warm rap

Posted by BushogPapa on September 08, 2004 at 08:23:29 from (205.188.117.22):

In Reply to: warm rap posted by jeffrey on September 08, 2004 at 08:10:47:

It could be a lot of things, but I would suspect crankshaft end-play, or worn wristpins...
It will change sound when you short the plug on that cylinder, while it is idleing.
If oil pressure is ok at Idle--warm, I wouldn't think it would be a rod bearing or main bearing..
Piston "slap" (worn pistons)will sometimes show up as the engine warms up and the oil heats and thins...
If it is not too bad, and doesent get any worse, I'd suggest using heavier oil, and use it..may not get worse for 30 yrs....!!!!

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