Re: Water Getting in Top Cylinder Yamaha 40hp Twin

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June 1, 2016 at 12:54 pm #37527
RICK EICHRODT
Participant

    Check for a broken reed on the top cylinder…..same thing happened to me on a 6 horse OMC motor. Drove me crazy. With the reed gone, the top cylinder acts like a pump and sucks the water up into the cylinder from the exhaust manifold dump.