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  1. Thestevedybowski

    RPM issue with my port engine

    Hello, 2007 8.1L Mercruiser Horizons here with 390 hours. Lately my port engine wont get about 2800 - 3000 RPMs. It is running fine below that and very smooth but can not get above 3000 most times, even if I open the throttle wide. Every now and then it will run fine like nothing is wrong but...
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