Question about Yamaha 12V Air Pump
Always good to start with a compression test to make sure the cylinders haven't lost compression (power). If all are equal and above 100psi you are good. It may be a cavitation problem... (too much air leakage into the jet pump) a gasket kit may resolve this issue if it is over reving on accelleration.
Posted on Aug 27, 2010
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Posted on Jan 02, 2017
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