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White smoke out the breather hose and exhaust

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I have a 2005 yz250f and when I get it hot and then shut it off then kick the bike it will blow out white smoke out the breather hose and the exhaust. I pulled the head and the piston looks fine, it just has some carbon built up on it. The cylinder also looks fine. Any thoughts on what could be wrong?

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Posted (edited)

What does the smoke smell like?  Sweet or Oil?  Is the engine running hot?  What’s the oil level?

Edited by R1peacock

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