1988 Yamaha Waverunner WR500G

miller152

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Joined
May 24, 2011
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4
We recently bought a 1988 yamaha waverunner. We took it out the first day with new battery and spark plugs. it ran well that day but clearly wasnt running at full power (speed) potential. Then we took it out again this weekend and was running about the same. but as the day went on it became slower and weaker.We checked the plugs and one was bad but we changed it with no results. If we put my 70 pound son on it it runs about the same as it did before with an adult but with an adult it goes really slow. also when we it was running "better" anytime you jumped a wave or spun around it would loose power for a few seconds and ran best by only going straight. Im new to all this. Does anyone have an suggestions?:(
 
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