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09 kx250f smoking

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Just got an 09 kx250f and it's blowing white smoke from the exhaust like a lot

Edited by Festy-Sloth
Misspell

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White smoke is usually an indication of coolant leaking into the cylinder, and is most likely due to a blown head gasket although it could be because of other problems.

Do you see any coolant leaking? Have you checked your coolant level?
Are there bubbles in the radiator when the bike is running? Drain the oil and see if it’s milky in color.

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Yes the coolant was frothy after only a few minutes. Could it be oil seals. It has a a 270 big bore kit. 

5 minutes ago, CRF James said:

White smoke is usually an indication of coolant leaking into the cylinder, and is most likely due to a blown head gasket although it could be because of other problems.

Do you see any coolant leaking? Have you checked your coolant level?
Are there bubbles in the radiator when the bike is running? Drain the oil and see if it’s milky in color.

 

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All the above suggestions .  Make sure the fuel is fresh , and proper .  Kid's grabbed diesel can and mixed fuel in it .,  then filled up all bikes before we left to go ride .   No damage ,  No mosquitoes ...

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