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    1993 Mercruiser 4.3 2bbl carb running out of power

    air, fuel, spark. In my humble experience the carb is blamed for many issues that aren't the carbs fault. The symptoms do sound like a fuel supply issue. If If the carburetor looks clean, as shown, you can chase common carb issues: float adjustment, tarnish on the jets, carb gasket, and/or...
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    Help with water in oil

    Thanks Lou. No water in the oil. thankfully.
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    Help with water in oil

    The engine ran like a top, when it did, for the first 20 minutes or so. last time out had a great Friday, great Saturday morning, started losing power and bogging down a bit in the afternoon and then backfired twice under load. fuel odour in the exhaust. put the boat on the trailer. said a...
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    Help with water in oil

    4.3 mercruiser, Purchased the boat 2 months ago. 3 trips on the water. ran great then ran bad then ran great and then really bad. plugs are black. leakdown test showed one bad intake valve (50 vs. 180) in rear port cylinder. pulled the heads for a valve job. both rear cylinders had about 2 tbsp...
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    Spark Plug blew out of engine...ever seen it?

    Had this happen today with an AC plug! had to limp back to the dock with one cylinder open. Loud and gassy. threaded part of the plug is still in the engine. other than the noise and the gas/air mixture spewing out of the engine, no other issues. investigating with a scope and doing a...
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