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1994 Yamaha Waverunner 3 will idle but wont take throttle

Hello, My 1994 Yamaha Waverunner 3 will idle but wont take throttle. It overheated when I pulled sand into exhoust. I cleaned exhaust out and took it out and it ran fine for 2 hours, now it will not take throttle. I have changed fuel lines,filter, rebuilt carb, rechecked rebuild, and still no change. Question: can the thermo switch have gone bad from overheat and be sending bad reading causing limiter to kick in. If so how can I check thermo unit to see if that is problem, It is an expensive part to change without being sure. Thanks, Don

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Switch to reserve tanke to check to see if there is a clog at the fuel pickup in the tank.
My friend had the same issue with his waverunner 3.

Posted on Aug 31, 2009

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1994 700 cc waverunner when it has run for 15 min engine bucks at full throttle at 3/4 ok i have changer plugs antreated fuel

Posted on Aug 17, 2009

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