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I have a 1991 yamaha waverunner wr500p it goes slow

I have a 1991 yamaha waverunner wr500p it goes about 5 mph everything looks fine with the impeller nothing tangled around it and not clogged. I cant give it more then a quater throttle without it hitting the rev limitter in or out of the water

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SOURCE: I have a 2002 Yamaha FX140 Waverunner.Fuel problem or electronic?

you have fouled spark plugs change them all fixed all the newq yamaha sare doing it it is the in thing to do

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SOURCE: My 1996 Seadoo has no power.

llllllllllack of fuel

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SOURCE: strong vibration 2004 yamaha xlt waverunner

Something was stuck to the intake obstructing flow.
When you shut it off it drifted away.
It is a good practive when in weedy or heavy debree areas to get clear shut the motor off count to 30 then restart and gradualy excelerate to make sure it is clear. used this method for ten years now and seems to work well for me.

Posted on Mar 18, 2010

  • 1 Answer

SOURCE: my '94 yamaha waverunner 3 runs great for the

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

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SOURCE: I have a 2008 Yamaha vx110 deluxe waverunner that idles high.

I dont know the answer but my vx deluxe is doing the same thing. Not as bad as yours but 4k rpm idle.....ANyone?

Posted on May 17, 2011

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Starts and runs and RPMs are good but it won't go above 5 MPH. Checked intake and I have the rooster tail of water but no speed


you may have to check the pump unit for obstruction
the impellers are known to wear from abrasion from sand in the water and not operate efficiently.

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Pull your air filter out and also replace plugs. Overtime the filter will become saturated with oil and believe it or not the plugs can cause about a 10 mph drop if there going bad. But make sure your pump and impeller are not damaged also

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Will only get up to 10 mph but RPM's are up to 8000. Impeller in good shape. No exhaust alarms. Newbie to waverunners.


I just had one do basically the same thing. I had to replace the impeller. It felt like a clutch was slipping. If they get any dings or nicks or anything in the impeller they will not getup speed at all.

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2009 Yamaha vx cruiser waverunner used to do 55mph now won't pass 35 mph


Nevermind those other answers, if its running on all 4the cylinders but just real sluggish and missing top speed then listen up, let's first rule out the possibility of a damaged impeller, now locate your airfilter box and remove the filter, just throw it away because last I checked dirt really doesn't settle on top of water, now locate your throttle body and remove the intake tube from it, now take out the 4 bolts that hold it on and find your flame arrestor element. I've dealt with this problem many times only to find out that the geniuses at Yamaha had installed this screen right after the butterfly which accumulates airfilter material and clogs

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I have a 98 yamaha 150 2 stroke outboard engine, when cruising about 23 mph she runs fine, but when i run her faster a alarm under the dash goes off in which i will slow it down to idle and the alarm will...


Although water is seen thru the tell tail hole, your engine is overheating. When were the thermostats replaced last? Water pump impeller may also be fatigued, and not pumping enough at high RPM's.

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YAMAHA WAVERUNNER 2000 XL 800, WILL NOT RUN PAST 12 MPH


Have you done a compression test on all cylinders? My guess is you have a dead cylinder (no oil to one or more cylinders causing loss of power). If the compression test passes (all cylinders equal and higher than 100-110 psi) you have a restricted exhaust from a failed catalytic converter that has broken apart.

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I have a 2008 Yamaha vx110 deluxe waverunner that idles high.


I dont know the answer but my vx deluxe is doing the same thing. Not as bad as yours but 4k rpm idle.....ANyone?

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