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Bike idling but but runs ruff/cuts out after revs

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Bike idling but but runs ruff/cuts out after revs (half revs and over) just cleaned carb out and was running bang on for 2-3 minutes then went back to dying on high revs, im geussing the carbs become reblocked or could be spark plug/reed valves??? I jet washed the bike last time i went to track and water could have got in the tank??

YZ85

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First check the easy stuff air filter. Then I would take carb off the bike.......The next thing I would clean carb blow the jets out with compressed air don't blow directly in the bowl hold air gun back a little ways so you don't mess up the float height. Oh ya I made a mistake. ........ first drain all the fuel put in fresh see if it will run it might just be bad fuel kwhich could foul plug........

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Sounds like you have crap in your fuel...

Has the fuel been stagnant for a long period of time? When you cleaned your carb was there much gunk in there??

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