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  1. G

    4.3 Mercruiser won't start

    Thanks for your input. It's been a bit of struggle. No where can I find a correct wiring diagram. Will keep looking, thanks
  2. G

    4.3 Mercruiser won't start

    So I have a 1999 Bayliner Trophy 21' , 4.3 Mercruiser I/O tbi carb, 2 barrel. So here's my issues. Ran the boat out on the water and it quit running all of a sudden. Got it back home and found a loose wire at the coil. Replaced the end of the wire which plugs into the coil and the other end...
  3. G

    2012 Mercruiser 4.3 MPI fuel system problem/wiring diagram

    So having an issue with my 4.3 Mercruiser also. This sound just like what I have going on too. No power to the fuel pump. Switched relays no difference, checked fuses, all good. When I turn the key on the fuel relay clicks then 3 -4 seconds a second click. If I bypass the positive and negative...
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