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1978 70 hp

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  • 1978 70 hp

    loses power at WOT
    I have had:
    replace the fuel tank and line
    replace fuel filter
    replace the power pack
    the carburetors rebuilt three times
    each time the carburetors are rebuilt, it runs fine for about 10 - 25 minutes then loses power at wide open throttle, to about 2200- 2500 RPMs.
    starts easy and idles smoothly. will only accelerate to about 2200-2500 RPMs after it loses power.
    I waited a week and tried to run it again and only runs 2200-2500 RPMs.

    it is not over heating
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