06 wr 450 coolant probems

ok it is constantly putting fluid into the overflow at the back of the bike even when it is cold you can start it cold and watch it run into the over flow bottle and will continue to fill it untail it overflows ive fllushed the whole coolant system twice also if i start it and look into the radiator it looks like the coolant is circulating so that being said what to do next is it my water pump or? any help is apprciated thanks

My first guess is a blown head gasket and you are pressurizing the cooling jacket on the motor. Check for bubbles in the radiator, if none perhaps just a bad radiator cap.

ya thats kind of what im thinking a head gasket i forgot to mention that the coolant gets foamy if that helps lean one way on diagnosing the problem thanks

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