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  1. M

    Using Mercruiser Manifold on Yamaha 3.0L L4

    My mani and riser are shot, so I'm going the route of a Mericruiser mani. From what I understand, an angled riser would give me a better shot with lining up with my exhaust, and I have to get a mercarb. A couple questions. I came across a thread mentioning having to run additional plumbing...
  2. M

    Help... Yamaha 3.0 liter I/O crapped itself

    My engine ran with hesitation at some points, and would stall out at times. Now it will crank, but wont turn over. I checked the oil, only to find a milky liquid. I pulled the valve cover and head to check for BHG, or any info that would help me figure out where the water is getting in. Here are...
  3. M

    Need Yamaha 3.0L L4 Parts

    Need starter. Mines is on its way out. Anyone know where I can find one of these bad boys, or something interchangeable?
  4. M

    Help with identifying engine

    Hello All. Just picked up a 20' CC, and heres the situation. The engine stalls at about 3000 RPM, but below and above that is fine. Through research, ive concluded that the carburator is the culprit. Id like to replace the carb, but Im having a prob figuring out exactly what engine I have. Heres...
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