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  1. J

    Fuel pumps and Aux. fuel tanks

    I have a Wellcraft 248 Offshore with twin Merc 150's. The main fuel tank has 125 gallons and then the previous owner added a 50 gallon Aux. tank in the bow. The boat runs perfect from the main tank. When I switch to the aux. tank I get air in the fuel lines whenever I am in seas over 2...
  2. J

    1984 Merc. 150 overheating.

    I have a 1984 V6 Merc. 150hp that is overheating. I have changed the water pump and thermostats(Even tried to run it without t-stats). I have changed the head gaskets and have good compression. I have changed the exhaust plate gaskets, and I have checked the idle valve(poppit) for...
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