Hey all, I have a 2002 CBR600F4i that won't stop overheating, I've already replaced the water pump, thermostat, radiator, even coolant temp sensor, what else could be causing it to overheat? I also made sure there's no air in the system by filling the radiator up and leaving the cap off, ran it for 10 min and revved it up a few times to get the air bubbles out, then waited for it to cool down and topped off the coolant.

 

Could one or more of the hoses be delaminating and blocking the flow of coolant?

 

Have you tried replacing the radiator cap, I had a similar issue on my CB500 and it was the cap that was defective and would not hold the pressure in the system causing the coolant to boil over.

 

I did a exhaust gas test from the radiator cap and it looks like I unfortunately have a bad head gasket or head, time to rip the motor apart...

 

oopps, not the result you were hoping for, sorry to hear that.