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    Oil Pressure Sender for 1990 4.3 Mercruiser

    I need a new oil pressure sender for my 1990 4.3L mercruiser engine. Serial number is OC765828. I am needing to know the OEM part number so I can cross reference at the local NAPA store. I’ve read these things are screwy about the OHM’s and the oil pressure gauge so I will pass along that the...
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    Engine will not start in the water but starts and runs fine with muffs out of water

    Having problems getting boat to start in the lake. I've had it hooked up to muffs in the yard and motor will start and run great, no doubt that it would run till it ran out of gas as long as it's on muffs and in the yard. I backed it into the lake today and it would crank over but wouldn't hit a...
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    how to adjust carb on 4.3L mercruiser

    I can get the engine to start and idle good. I start to have problems when I push throttle lever forward. When I get to about half throttle the engine will spit, sputter and die, unless you catch it quick enough to pump the lever a couple of times to keep it running. Note: Carb was rebuilt...
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    4.3 Mercruiser wont start

    I just pulled the motor out do to it being locked up. I re-installed motor hooked up all wires, replaced plugs, fuel filter, etc. the motor is cranking good and sounds like it is on the verge of starting but t doesnt. Side note: motor has not ran since spring of 2012 due to other issues with...
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    Engine died while cruising down water

    The last time i went boating the engine just died for no apparant reason. do i need to replace the oil pressure switch? I have already replaced the spark plugs. Thanks for the help!
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    problem starting 1990 mercruiser 4.3L

    I just replaced starter and relay soleinoid. When I turn the key all i here is a clicking sound. Also the battery is fully charged. Any help or ideas greatly appreciated!
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