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    5.0 mpi mercruiser

    i have a laptop and it wont connect to check for codes. i find that odd. the next thing i will try is to see if the ecm has power and a ground. since it delays 15 seconds before the horn and fuel pump come on i think it is a ground problem but the ground is connected to the back stud on the bell...
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    5.0 mpi mercruiser

    serial number om530789 key on no pump or horn for 15 seconds then the pump and horn come on and never cycle off. the pump and horn only shut off when key is turned off.it will kind of start but runs bad, 40psi fuel pressure i have checked grounds and of course power i have a hot battery and i...
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    5.0 mpi mercruiser

    I have a 5.0 mpi mercruiser with a bravo 3 drive. we pulled the motor to get the transom fixed .while the motor was out we installed new water pump manifolds and we ran motor on the ground it ran fine. now the motor is back in the boat it is being stupid. turning the key on gies the motor...
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