Re: Water Getting in Top Cylinder Yamaha 40hp Twin

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June 2, 2016 at 4:49 pm #37614
Don
Participant

    US Member

    Not quite sure what you are asking, but I seem to remember you saying the engine ran better and "almost got to WOT"….So, just what is the running status now? Does it idle nicely? Does it develop full power in gear? Could just be something simple like carburetor linkage getting screwed up and one or both butterflies not opening fully. The compression sounds OK, so it doesn’t seem like any of the reed screw debris did any significant damage.