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    2007 Merc 4.3MPI slow initial cranking

    I've been trouble shooting this problem for a while now. The engine is slow to crank at first and then builds up to a some-what normal speed. I cleaned all connections (that I can find) and applied dielectric grease. Replaced both solenoids (corroded), still slow to crank at first. I bypassed...
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    Closed cooling through hull valve placement

    Continued cooling issues . . . I have a 2007 Trophy, 4.3 Mercruiser with a closed cooling system. It continues to overheat when in the water but runs as it should with a garden hose connected, with a Y-fitting, to the inlet hose (through hull ball valve closed). When in the water I made sure...
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    Alpha 1 Outdrive water flow diagram

    I have a 2007 Trophy with a 4.3 MerCruiser & Alpha 1 outdrive. I have a closed cooling system and I have gone over the flow diagram many times trying to figure out my cooling issues. I have a thru hull sea water pump cooling the engine system exiting the exhaust risers. I see one inlet at the...
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