Question about 2003 Yamaha WR 250 F

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Wr250f 2001.riding bike reved and stopped wont kik properly

Wr250f 2001.riding when bike reved on its own.pulled clutch in and bike stopped.tryed to kick start but it didnt seem to kick through each time let alone start.can you help

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@ strokes reving suddenly on their own is usually a sign of an air leak. Commonly at the crank case, reeds (reed block), Intake manifold (rubber split), magento side crank seal, CARB CAP.... If no obvious leak, have it leak down tested.

Posted on Oct 01, 2012

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If this is a two stroke,then if you have run it out of fuel,there is no lubrication for the piston and you may have damaged the piston or piston rings,check the compression,esay test is remove sprk plug pit your finger hard into the hole and crank the bike over,if your finger gets pushed off with loud crack sound then compression should be ok,but if it doesnt and the preesure is very weak then you will be looking at a top end rebuild,hope this helps

Posted on Jul 04, 2009

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