My KE70's been overheating for the passed 2 weeks. I'll drive it for 30 minutes, no overheating turn it off, drive it again for 20 minutes then it starts overheating and missing. Have changed thermostat, radiator cap, new water pump, flushed coolant 3-4 times, don't think it's a headgasket as it's not blowing smoke, no milky oil etc. Have also bled the cooling system as best I can (had the front of the car on stands). Radiator has also been reconditioned 3-4 years ago, new hoses aswell. I have no clue what else it could be, any help would be great.
There is a rushing water sound underneath the dash when I make sharp turns as it's warming up.