Engine Performance
I have 1 2012 Mercury 115 Four Stroke. I noticed over the summer that my engine was losing MPH. I was running 6000 RPM and only going about 19 MPH. Took it to shop and they got it up to about 24 MPH. I know that in previous seasons it would run much more efficiently. Could this be from a fouled spark plug? I am confident that running the engine at 6000 can not be good. Any advice would be appreciated. Thanks!
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