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    Volvo Penta Backfires underload

    any advice on why it would be low? It ran before engine swap. does it need any change or reprograming since cylinders were bored out?
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    Volvo Penta Backfires underload

    Hi all, I am trying to figure out fuel injection. I have had quite a bit experience with Mercruiser carburated models but new to both fuel injection and Volvo Penta. My engines model number is 50FAPNCA (Ford 5.0). My boat had a clear rod knock but ran so I pulled it out and replaced it with a...
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    4.3L Noise Help

    Hello, I am looking for some help with a noise my mercruiser is making. I can't locate it, I bought the boat with a cracked block so I sourced a used engine and rebuilt it. But it makes a noise now. The noise is a quiet rhythmic knock like knocking on a solid wall and is directly proportional to...
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    4.3 Milky Oil

    I bought a 4.3 it has milky oil. I can’t see a crack on the exterior of the engine block. The exhaust manifold is cracked though. Could water get in to oil from exhaust manifold. Is there a way to test engine if the block is internally cracked? Thanks for your help am a high schooler and trying...
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    4.3 Engine swap

    Hi, my name is Tyler, I am 17 and I have a 2003 MerCruiser 4.3 with casting block 090M that the piston came apart and put a hole in the cylinder wall, I have a 4.3 block with casting number 090. I plan to rebuild the engine with the new block, new camshaft, piston, rods, etc. Has anyone done a...
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    New 4.3 Engine Help

    Hello, I am 17 and found a 2003 bow rider boat, it is a 4.3 MerCruiser says has spun bearing and blown head gasket, water in engine. I am considering getting it, I just need estimates on replacing the engine my self. I am going to replace the engine with a remanufacturd long block. My question...
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    Pre-alpha Shift Shaft pattern

    I can’t figure out why the slot in bible housing won’t turn the right direction as what the shift shaft requires. I have attached a picture of the positions and what gear the out drive is in, is this the correct/normal pattern. The arrow is the direction the brass foot is facing.Thanks for the help
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    Mercruiser Pre-Alpha Shifting

    Hello, I am 17 and trying to flip a boat. I have replaced the lower shift shift cable, bellows, and impeller. The brass lever/foot on lower unit is difficult to rotate, I must use a wrench to rotate it. But when i can rotated it goes into drive-neutral-reverse. I can't figure out what is wrong...
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    Trim Pump Down Issue

    Hello, my name is Tyler, I am sixteen years old and this is my first boat project. I have a Cheetah 170v with a 1983 Mercruiser 140 with a MR Drive. Previous owner left the boat forgotten in trailer position, it leak water out of the rear core plug. I pulled the engine replace core plug...
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