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    Mercruiser 5.0 MPI fuel problems

    Wow that's a lot of possibilities, I'll def have to get the CPU scanned now before toying around with much else. Greatly appreciate the input.
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    Mercruiser 5.0 MPI fuel problems

    I meant that it wasn't firing. So if I hear the fuel pump turning on, the engine cranks and fires as normal, but struggles as soon as I give it any throttle. It just starts bouncing around the RPM ranges from 1200-1500RPM. If I go past 1500RPMs I get a loud constant beep. With the beeps, I get...
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    Mercruiser 5.0 MPI fuel problems

    Thanks I'll check the wiring. One last thing, if I hear the fuel pump turn on and it cranks over, i'm getting a double beep whenever I rev the engine. I don't have a scan tool but is it possible this could also be related to the fuel relay issue? or would this be a separate issue (oil pressure...
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    Mercruiser 5.0 MPI fuel problems

    Fuel pressure was checked before the pump was replaced. Also wouldn't explain why the fuel pump doesn't turn on half the time when the key is turned to power.
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    Mercruiser 5.0 MPI fuel problems

    After some more digging I think it could be the oil pressure sensor. I want to order a new one (part # 881879T11) but first I want to test the wiring to it and I cannot find the location of it on the motor? I looked at some part diagrams, but none show it's actual location on the motor. Any...
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    Mercruiser 5.0 MPI fuel problems

    Just some background, have a 2012 Bayliner with a 5.0 Mercruiser MPI sterndrive After the winter we tried to start the boat and it wouldn't crank over. Realized we didn't hear the fuel pump kicking on. Tested electrical and all was good. Tried starting the motor with starter spray and it turned...
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