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  1. C

    Engine is smoking, sputtering, and won't go above 1.8 RPMs at full throttle. Spark Plugs are black. Mercury

    I have a 2006 Mercury 75 4-Stroke EFI (75ELPT 4S). I did not get the boat on the water last year, but I did run the motor in the yard for a few minutes. The gas in the boat was old. Half of the gas is from 2022, and the other half was from 2023. I did add Stabil fuel stabilizer. When I went...
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