Question about 2004 Yamaha YZ 250 F

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MY 2006 yz250f is overheating too i think... i had a smashed left radiator and ever since i replaced it, my coolant spews out of the overflow tube when i really get on the gas. if i just putt around it doesnt leak, but when i ride it hard is when it pours out of the overflow.. is this overheating? or is this a flow problem? ive already checked for clogs, replaced the cap, and cheched the impeller... cant figure it out???

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  • Ryan M May 11, 2010

    Could pieces of old radiator be somewhere in the engine? Sounds like a clog to me...

  • thomasnee May 11, 2010

    Does it it pour out to the point where you have no water/coolant left?Does the bike actually overheat.If you fill up the radiator and ride it hard,does it overheat or is it just the normal expansion of the water.Does it spew out water/coolant after 2 rides if you have not touched anything?If you fill them up full,some will come out.We just need to know how much comes out.Mate.Glad to help you

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It's possible your head gasket needs to be replaced. It sounds like combustion pressure is being introduced into the cooling system to me and the head gasket would be the logical place for this to occur.

Posted on Nov 25, 2009

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