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  1. J

    1990 Sundancer 270 DA

    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...
  2. J

    7.4L Mercruiser Knock at idle

    I’m a new boater, can you explain what you mean with the drive off? Like, do you mean pulling the boat from the slip?
  3. J

    7.4L Mercruiser Knock at idle

    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...
  4. J

    Amplifier Issue Post-Install

    So, figured out a couple things. I had a nick in an RCA cable that was shorting out on the 12V antenna stud. That figured out one problem. After I replaced that, I found out that if I have my water system switch on with my cabin light switch (and 2 or more cabin lights on), the amp shuts down...
  5. J

    Amplifier Issue Post-Install

    I'll be back up at the marina today. The one thing I forgot to mention and just realized is that I bought a universal ISO DIN connector from Amazon which has +12V ACC, +12V BATT, and GND pinned, but connected it to a stereo that uses 2-wire power (+12V ACC and GND only, no +12VBATT). The...
  6. J

    Amplifier Issue Post-Install

    I confirmed before I left that I could shut the Perko battery selector switch back to the OFF position, and the amp would turn back on and play at 3/4 volume absolutely fine. As soon as I turned the Perko switch back on, Protect Mode. I used the old speaker wire that was connected directly...
  7. J

    Amplifier Issue Post-Install

    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)...
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