Recent content by Davidongdds1996

  1. D

    Circulating water pump

    I have a 5.7l mag mpi mercruiser 350 engine with a closed cooling system. ( I add coolant to this system) But I also have the sea water pump too. I recently removed my water heater that I don’t use on my boat. It had two hoses connecting to it, one coming from the top of the circulating water...
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