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I had an issue out on the lake last week that I'm looking for some guidance on. I have a 7.4L Mercruiser Bravo I single engine Sundancer. Motor has 1,400 hours on it, and it runs extremely well for the age, never had any problems. I changed the oil and fuel filter this year. I was on plane...

I have an intermittent knock going on with my 7.4L Mercruiser Bravo engine. It only happens at idle, and when I move the throttle up at idle it speeds up with the RPMs, then goes away. Sometimes at idle, it will go away and come back. Engine temp, level, and oil pressure are fine. Boat starts...

I installed a Polk PA2000.2 2-channel amplifier into my 1990 Sundancer DA. There are two brand new deep cycle batteries already installed. To start the job, I turned the Perko battery disconnect switch off and disconnected grounds from the batteries. I went overkill on the wire (4 AWG)...