I have a 2001 r6 and its over heating. I changed the thermostat and its still over heating what should I check next.

Hi, If you have not already eliminated these: Check for (1) head gasket damage:(Open water reservoir, rev engine... bubbles may indicate a head gasket leak) (2) Sticking or damaged thermostat, blocked radiator : (3) Fan not running .. normally only required in traffic (slow speed) or during idle. Finally, and rarely the case, the engine is too far advanced (timing) but this requires an electronic diagnoses and fix rgds Kim

Is the water flowing freely thru the radiator?
Is the radiator fit on its outside, and not damaged?
Have you checked the thermostat in boiling water?
Is the thermostat pointing the correct way?
Is there air in the system?
Is the system boiling?
You can get coolant that transports more heat away from the engine.

Firstly, is your fan coming on? Should kick'in between 103-110 max.

If no, then check you have no air trapped in the water system which will stop circulation and make your water boil. If the system is bled properly and still no fan coming in then check the fan switch.
If your fan is coming on and still overheating after a while then you could have a water pump problem. Worse case you have a blown gasket which can usually be identified by checking the oil for cream and will also produce continuous smoke from exhaust. If theres cream looking oil rather then brown/gold then poss head gasket or could still be water pump seals....

Water pump ? and try it with out the thermostat in .

Water pump? In what situations is it overheating? remember they all get a little warmer when at slow speeds or in traffic with warm weather.
If not, see if the radiator is not clogged up or full of "mud".

Tyres are easier to fit and remove with levers if they are hot, as the rubber is more supple, this is how I do it. Let all the air out then place the wheel flat on the floor, stand on the sidewall of the tyre to break the bead seal, put the wheel next to a hot radiator if possible for about 30 minutes then get your levers under the tyre bead roughly at 4 and 6 if the wheel was a clock and press them down on the rim until you have the section of tyre between the levers on the outside of the rim, leave one lever in place then move round passed the lever about 4 inches and insert the other lever under the bead and pry it over the outside of the rim, keep doing this until it is all on the outside, once you have one side done turn the wheel over and get the levers between the tyre and the same side of the rim you just released one side of the tyre over and pry the second side of the tyre off.

When engine is warm and working check cooland Check the radiator and water pump,when the engine has entered the thermal regime opened the cap of the cooling system and see whether the increase in engine speed liquid circulates or not.

I have seen cars where the bottom hose on the radiator sucks in under acceleration and stops the coolant flow, the solution was to make a wire spring using a broom handle. This stops the hose closing shut but if this is the issue a better quality bottom hose would be a better solution.

Did you put the thremostat in corectly they are a one way valve if put in backwards no water will flow thru them

Sounds like the fan isn't coming on. Depends on what conditions you get the overheating. Are we talking sitting in traffic or fast motoring?
Alex
deadandawakemovie co uk

Check the fuses for the fans
Check there are no stones in around the fans which could stop it rotating and cause the fuse to blow.
Check that the relay for the fans under the fairing on front left side of frame

If you changed the thermostat you may need to change the line that the cooling is going to as well. Either it's a slow leak or you have something that's clogging it. Check that line set too

Hi I would guess its the water pump not curculating the water or your rad might have a block.
Paul.

No white smoke still I would do a leak down test on engine & on cooling system

Too many possibilities. You could have air in the system. Run it until warm, check the radiator, fill if necessary, repeat. Is the fan working? It should spin when it gets hot. Is there oil in the water or water in the oil? Bad head gasket. Check all and call later.

You may have an air lock or a faulty water pump,check water circulation through the radiator and engine

Do you use coolant? flush out all water ,use rust inhibitor the fill up with a good quality anti freeze anti boil

I'm guessing you have checked the fuses are all ok...my guess would be trapped air in the system, bleed it fully and try again

Make sure the fan and temp switch in radiator r workin.

Have you let is tick over at a standstill to see if the fan is comeing on, And made sure no airlocks.