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Old 03-05-2000, 09:19 PM
Posts: n/a
It is possible to have normal compression and have alot of blowby. The top piston ring is for oil control and the lower ones are for compression. I agree it is annoying, but if it runs ok, it is not worth spending the money to repair it. Valve seals are not a problem on these engines, I have seen them replaced only on the newer 603 motors, but their problems are different all together (pistons/rings).

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