Reply To: 1960 3hp sea king/gale buccaneer

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October 4, 2026 at 2:14 pm #329415
CHUCK
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    Air leaks:  You might be on the right track

    Compression pressure vs. crankcase pressure.

    Did you ever have the crankcase halves apart?

    Is there any evidence of leakage at the crankcase seams?

    The reed valve and the associated gasket:  Is there something not assembled correctly or is the gasket sealing surface impaired in some way?

    ALSO:  Any chance that the exhaust is restricted with rodent debris or anything else?