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    Mercruiser 250 inline 6, power loss under load

    Hey guys, Having issues with my mercrusier 250 inline 6, nothing but problems all last year and still continuing into this year. Pretty much starts fine, idles a little rough but not too bad. On the muffs if i give it gas it is responsive and no hesitation while revving it up. On the water...
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    Mercrusier 165 inline 6 bogging down under load/getting up on plane

    Hey guys, Been having more issues with my motor again, had another thread but this seems to be a different problem now occuring so I figured I'd start a new thread. Had a previous issue of hesitation/missing and the motor not running properly while cruising and up on plane. Motor now runs...
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    Mercruiser 250 inline 6 rpms intermittently dropping

    Hey guys, Having an issue with my 1981 mercruiser inline 6 and wondering if I can get some opinions from people that know more about motors than I do. What the problem is, is when I am cruising at around 1500-2300 rpms, sometimes a little lower/higher, the rpms will drop a few hundred then pick...
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    Mc-1 trim won't trim up

    Hey guys, Took my boat our for the very first time yesterday, ran fine all day until I got back to the launch. Started to trim the outdrive up and it moved about one inch then the pump got really loud whirring noise and the outdrive just stopped moving. So the outdrive its stuck in the same...
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    Mercruiser 250 inline 6 idling problems

    Hey guys, Working on my 1985 mercruiser inline 6 and I'm having a difficult time to get it to idle properly, I can get it to start and at higher rpms it runs fine, when I decrease the throttle it will idle down to roughly 900rpm, if I leave it there and let it run, after a few minutes it will...
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    Nissan ns8b pee/indicator hole

    Hi guys, I recently purchased a 1994-95 Nissan 8hp 2 stroke outboard. It starts first pull and runs perfectly. My question is that when it is running the water coming out of the indicator/pee hole is intermittent and not a steady stream like on my mercury 2 stroke. Is this normal for this motor...
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    Shift interrupt switch - mercruiser 140/165

    Hi everyone, Just purchased a boat a few weeks ago, now it's pretty much the end of boating season around here so I havent taken it out on the water yet, but when I purchased it we ran it on muffs and it shifted into forward and reverse and ran nice. I know its not the same as running it on the...
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    Quick winterizing question regarding mercruiser 165 l6

    Hi guys, I just have a question concerning winterizing my mercruiser 165 straight 6. I just bought the boat this year and this is my first time wintering an I/o. The main question I have has to do with draining the block and exhaust manifold. I pulled both hoses off the thermostat housing first...
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    1975 starcraft holiday 18' - help with hull serial number

    Hi everyone, New to the board, just purchased a 1975 (or so I think) starcraft holiday. I live in ontario, Canada and I need to liscense it since it has a motor over 10hp. I found the hull identification number on the outside of the transom on the starboard side, I can make out most of the...
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