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    Yamaha 150 4stroke

    I have twin Yamaha 150 four strokes, and the port engine will not go over 3300RPM's. It sounded like a fuel delivery problem, or an ethonal problem. I took it in to get fixed, and they are telling me that i have a blown powerhead. Will your engine still run at 3300 RPM's with a blown powerhead?
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    Yamaha 150 four stroke trim

    When i trim the port side engine up, it will trim for a couple inches than stop. When it stops, it sounds like it wants to go, but it just does not go up. Do i need a new pump?
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    Yamaha F150 problem

    I have a pair of Yamaha F150's. The engines get a lot of use, but recently they sat for about 5 months. The port engine was not taking on a load and would not go over 3300RPMs. I changed the fuel filter in the motor, and took it out and ran good, on the way back in the engine started dropping...
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