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115 hp, 4 cycle will not run above 3000RPM

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  • 115 hp, 4 cycle will not run above 3000RPM

    Started last year with ethanol contaminated fuel, I've cleaned the high pressure pump screen, sent the injectors away to get cleaned and tested, replaced the gas (and tank) runs better but will only maintain an rpm of 2900 but if I goose it it will briefly go to 4000. WOT previously was 4500. Also changed plugs and did a compression test which was OK.
    Help
    Thanks
    Bob

  • #2
    Need to check fuel pressure. Sounds like you need to change props, it should turn between 5000-6000 rpm's at full throttle.
    Regards
    Boats.net
    Yamaha Outboard Parts

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