Race_Bennett said:wow thats wierd... maybe water pump?
Ghunter hit it right on the head :)ghunter said:If you are blowing that much coolant out of the radiator, you probably have a blown head gasket.
MOTO ON RM250 said:I know exactly what is it. The same thing happened to my old 2000 rm125. We bought it off a guy on fleabay. We tried the radiator cap and it didn't work. Then we went to the head for answers and it turned out the guy left out an o-ring (not ring) underneath the head. This is probaly whats wrong with your bike.
Except CR85s do NOT use o-rings for head gaskets.