Re: Top speed with 18hp Evinrude on 14′ aluminum

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January 15, 2017 at 11:53 pm #51102
stephenspann27
Participant
    quote wannabe outboard guy:

    Hey Stephen, one more thing. You stated the upper plug was white while the bottom was brown. You may want to check that the top hole was even firing. That sounds like a dead fuel washed plug to me.

    I did verify both cylinders still had spark. I"m wondering that on the compression stroke, as the piston is approaching TDC is the fuel/air mix just blew past the rings before the spark plug was firing.