I'm fighting an overheating issue on a 2006 ZX6R.
The bike runs 195-210F while moving, however, it quickly jumps into the 230s when idling. It then proceeds to slowly creep up until hitting 240s and shutting off.
I have checked/done the following:
- Flushed cooling system with a hose, then put strong chemical radiator cleaner, rode for 4 hours (as per instructions), flushed again, and put distilled water with water wetter
- Opened up water pump. Propeller is in great condition, free of gunk. When running with the radiator cap off, reving the engine gets the coolant inside the radiator moving fast, indicating to me that the water pump works
- Took out thermostat and put it in a boiling hot water. It opened 8mm as per instructions in the manual. I did not find out at WHAT temperature it opened but it looked to be in good condition and functional. Cold water closed it again, and the boiling water once again opened it.
- Ran the bike with the radiator cap off and revved it till no more bubbles came out (burping the cooling system)
- Verified fan turns on ~210F and spews a CRAPTON of burning hot air on my legs while it idles and overheats. Fan is working and radiator is burning hot to the touch throughout, yet bike temps still keep going up until it shuts off. This is in 70F ambient temperature.
None of these have helped (significantly). I am OUT of ideas on what is causing this much overheating. I do not have a ECU flash or power commander or any mod that would mess with the ECU or fueling. I also have checked that the oil is NOT milky (it is completely normal colored) and my exhaust does not make any white smoke (I don't think it's a blown head gasket). The bike runs very strong and there is no loss of power.
Please help. Frankly...I am considering trading it in/selling and taking a loss on it if I can't figure this out. I love this bike but I can't ride it if it overheats/burns me.
The bike runs 195-210F while moving, however, it quickly jumps into the 230s when idling. It then proceeds to slowly creep up until hitting 240s and shutting off.
I have checked/done the following:
- Flushed cooling system with a hose, then put strong chemical radiator cleaner, rode for 4 hours (as per instructions), flushed again, and put distilled water with water wetter
- Opened up water pump. Propeller is in great condition, free of gunk. When running with the radiator cap off, reving the engine gets the coolant inside the radiator moving fast, indicating to me that the water pump works
- Took out thermostat and put it in a boiling hot water. It opened 8mm as per instructions in the manual. I did not find out at WHAT temperature it opened but it looked to be in good condition and functional. Cold water closed it again, and the boiling water once again opened it.
- Ran the bike with the radiator cap off and revved it till no more bubbles came out (burping the cooling system)
- Verified fan turns on ~210F and spews a CRAPTON of burning hot air on my legs while it idles and overheats. Fan is working and radiator is burning hot to the touch throughout, yet bike temps still keep going up until it shuts off. This is in 70F ambient temperature.
None of these have helped (significantly). I am OUT of ideas on what is causing this much overheating. I do not have a ECU flash or power commander or any mod that would mess with the ECU or fueling. I also have checked that the oil is NOT milky (it is completely normal colored) and my exhaust does not make any white smoke (I don't think it's a blown head gasket). The bike runs very strong and there is no loss of power.
Please help. Frankly...I am considering trading it in/selling and taking a loss on it if I can't figure this out. I love this bike but I can't ride it if it overheats/burns me.