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    4.3 MPI Runs rough after putting in gear

    I have a 2003 4/3 MPI with Alpa 1 Gen 2. My boat runs fine in the street on the muffs. It starts fine and idles well. I can get up on plane and it runs strong and fast. After running for a while, and shutting down to sit for a while, it starts fine. SOMETIMES, after running/sitting/starting...
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    What's a good Prop for my 4.3L 220hp 18' open bow?

    I have a Tahoe Q5 (18' open bow runabout) with a 220hp 4.3L MPI Mercruiser. I have two teenagers that wakeboard and water ski. My boat has a good top end speed but has trouble getting out of the hole. I had an aluminum 3 blade 21 pitch prop and went to a steel 3 blade 19 pitch. I saw no...
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    Getting hours from electronic ignition

    I have a 2002 Mercruiser 4.3 220hp I/O. There is no hour meter on the boat which seems odd to me. I thought I heard somewhere that somewhere in the electronics of the engine control, the hours are recorded. Has anyone heard of this? Is there a way to extract the hour information from the engine...
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    How do I know what props fit my 2002 4.3L Merc MPI?

    I have a 2002 4.3L MPI 220hp in my boat, and I want to try different props to improve my hole shot. I found some Merc props used online, but don"t know it they will fit. The numbers are: 48-58422A4 48-79576A4 48-79578A4 How do I know?
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    What size enggine should I get.

    I'm looking for a used boat and my feeling is that I want a mercruiser V8. What are the down sides to getting a V8 over a V6. obviously the V8 has more power, but is it louder? Any advice on the proper engine size? I have kids that are going to be learning how to ski/wakeboard. What are the...
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    1989 Capri 1950

    Does anyone have a Bayliner Capri 1950 with an OMC 3.0 that they could take a picture of the carb linkage? I'm not sure mine is set up correctly.
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    Camshaft OMC 3.0

    I noticed that in my OMC 3.0L the cam lobes are not centered under the lifters. The fuel pump cam is centered on the fuel pump plunger. The camshaft journals look like they are centered in the bearings correctly. Is this correct, or should the cam lobes be dead center under the lifters?
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    Connecting rods/Wrist pins

    I've been trying to get my OMC 3.0L engine to run smooth after a rebuild. New pistons new wrist pins. I am searching for excess engine noise, and have noticed something that I need to know if it is a problem. When placing the pistons on the bench with the connecting rod up, two of the rods move...
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    3.0 omc knock and low oil pressure

    No it's not as simple as that. I have a 1989 3.0L OMC. I rebuilt the engine with all new parts. I had trouble getting it running, but finally got it to idle. However it's noisy. It knocks, and I'm thinking it is the lifters. (it is a knock and not the clack you hear when the rockers need to be...
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    OMC 3.0L Main Bearings

    I have a 1989 Bayliner Capri, with an OMC 3.0L. I recently rebuilt the engine and came across something that I thought wouldn't be a problem, but I want confirmation from someone who has seen this before. When I had my crank machined I bought the bearing set from the shop that did the machine...
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    OMC 3.0 Water in oil

    I have a 1989 OMC 3.0 (GM), sterndrive. I just rebuilt the engine. I have been having a tough time gettting the valves adjusted, but made progress by adjusting them with the engine running. I've taken it out twice, the first time I didn't have the shift cable adjusted correctly so I had shift...
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