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  1. Chased1

    Procharged 7.4 mpi question

    Hello again guys, im having an issue with my 7.4 mpi. Ive only had the boat for a few months and it runs very rich a idle and very lean at wot. I ve played with fuel pressure enough to get it to richen up at wot but of corse that doesnt help the idle mixture being so rich i get fuel and soot out...
  2. Chased1

    oil cooler cleaning

    Hello i boaters, i ve got a 1999 mercruiser 7.4 with a clogged engine oil cooler. The problem is its clogged with small stones and they re jammed in there pretty tight, tight enough that i cant just blow them out with air. I might have to use a long punch to get them out but im not sure if there...
  3. Chased1

    Dry joint exhaust manifold cooling question

    Hey guys, i have a set of stainless marine dry joint exhaust manifolds on a 2000 merc 7.4 mpi. My issue is by the time my thermostat opens my exhaust manifolds are burning up. Is this how its supposed to be plumbed ?
  4. Chased1

    Mercruiser 7.4 mpi fuel rail question

    Hello every1, im getting ready to to upgrade the fuel system on my 7.4 mpi. Does anyone on here know whats the type and size of fitting on the fuel rail where the braided line screws into the fuel rail?
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