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    Help Volvo 3.0gs popping thru carb

    Need help please. This thing is driving me crazy! This is what I have tried. Compression 150psi all four cylinders. Replaced distributor Plugs & wires Removed exhaust elbow & intake exhaust and water tested for cracks and replace gaskets Removed burnt exhaust flapper Replaced wore out...
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    Nissian 90 Low speed miss or vibration

    I have a Nissian NS90A that I and working on. This boat idles ok under no load and runs STRONG from 2000rpm's and up. This thing will shake the whole boat from just above idle til 1500 to 2000 rpm. Tried cleaning carbs. The only thing extra I noted it smokes a lot, and I read about a fuel pump...
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