Question about Yamaha 12V Air Pump

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My '94 yamaha waverunner 3 runs great for the first 30 minutes. After that it will run fine at idle and just above but the rest of the throttle it just bogs, like it is running out of gas or has some kind of rev limiter

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Could be a bad temp sensor. The bog is a rev limiter to keep engine from running full throtle when hot or when there is another problem. You can bypass the temp sensor and see if that takes care of problem. The parts about 100.00. I disconnected mine a now run a temp gauge which I mounted on the right side just above oil gauge.

Posted on Jun 20, 2010

  • Surfcreatr Jun 20, 2010

    P.S Be sure not running hot. You should be able to touch manifold when in water without burn!

  • george randolf lee Jul 20, 2012

    HELLOW I JUST BROUGHT 1995 WAVERUNNER 111 IT SAT 7YRS CHANGED STATER AND FIRED RT UP WE PUT IN THE WATER AND IT WOULD RUN THEN START SPUTTING COULD THIS BE THE PROBLUM THANKS IF YOU CAN HELP

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Posted on Jan 02, 2017

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