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    At wits end Runs great for 20miles then knocking then sputtering 3.0

    If everything else is ok, then check fuel lines/filter, including one in fuel pickup tube.
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    bellows distance

    My Bravo 1s are close, too close.
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    Stall during acceleration

    If you have tried everything recommended and achieved 0 results, it is your only option. I have rebuilt several q-jets and Hollies over my life. If they get internal corrosion or blockages, sometimes it is better to just trash them.
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    MAG 350 loses power after 20 minutes, need help

    remove anti-syphon and test. If still problem, re-attach and look elsewhere.
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    Correct time to winterize stern drive engine?

    It depends on what part of the country you live and do you continue using boat 12 months a year. Some on this forum will scream heresy but flushing with fresh water after using boat in salt water, many of us here just use a couple of light bulbs in the bilge area if we know freezing weather is...
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    Mercruiser 5.0 crankshaft front oil seal replacement

    UR correct on SB Chevy V8s. I have replaced several in my 73 years. Pain in the butt!
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    Mercruiser 5.0 crankshaft front oil seal replacement

    Plastic???? No wonder it crapped out!
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    Water leak around trim hoses on Alpha

    That and the drain plug holes are notorious for water intrusion and ROT.
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    Mercruiser 5.0 crankshaft front oil seal replacement

    I have never seen aluminum or plastic on a SB chevy motor. Was it cracked or eroded? If you have too loose chain, you should examine carefully.
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    Replace cone clutch 1999 Bravo III

    Ouch... Maybe best $$$$ to purchase rebuilt drive??? SEI make a Bravo????
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    4.3 Harmonic Balancer

    Perhaps it was the pulley?
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    Sewing Marine Vinyl?

    Thanks,. I believe that is who I purchased vinyl from years ago and the same gauge.
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    1992 3.0L Mercrusier - misfire over 2200 rpm

    It is hard to believe that you don't have a water/fuel filter separator. You didn't mention it? Fuel tanks are moisture magnets.
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    Electrical question

    Buy a good multimeter and test while a friend wiggles wires. If saltwater boat, look for green oxidation on wires
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    Engine cooling water in tube bigger than gimbal housng tube

    Look closely in your bilge for a possible hose bushing that may have dislodged. I have owned several Alphas and never seen bushing. However, if my memory serves me correctly, the Bravo hoses and transom hose connection are larger than Alphas. The former owner machined a larger hose connection...
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    Sewing Marine Vinyl?

    40 maybe too think for my old Kenmore. I wish I could find an old sales receipt-Thx
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    Lost oil in sterndrive

    Refill and remeasure. Any wet spots under OD where u park boat???
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