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1999 Evinrude 50hp, 4 stroke, water pump failure

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  • 1999 Evinrude 50hp, 4 stroke, water pump failure

    The water pump failed and the ends of the impeller went into the engine, before I bought the boat. the water pump was replaced, with no engine flush, and run for several hours with no overheat. So it could have flushed itself out. Water flow from the tell tale is not real strong, those small hoses are cleaned out.

    With the lower unit off, and the thermostat out, I water pressure flushed the motor both ways, into a large drum, and got 1 piece out, pulled the mid case and removed the pressure relief valve and housing found nothing.

    THE BIG QUESTION IS, http://www.evinrudeoutboardforum.com...confused.gifdo I continue exploratory surgery? and what do I pull next? or put it all back together and just watch it. the engine is like new with less than 50 hours, and don't want to ruin it. Thanks

  • #2
    Did you ever get a solution? I have the same issue and cannot get to the bottom of it. How did you get to the pressure control valve?

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