water pump questions

[nh591]

my bike is over heating and a few people have told me to check the water pump.

If it is the water pump what do I look for to tell if it is bad??

And if it is bad what do i need to replace it?

Any help ASAP would be greatly appriciated.

[JW450R1]

First off.What kind of bike is it.
Why do u think it's over heating?
Is the fan working properly?
How's the coolant level?

[pats2007450er]

could be the termastat(spelling)

[nh591]

trx 450r
i filled the coolant before a race then during the race it blows it out because of overheating
The fan works also
I think it is the water pump but i don't know how to tell

The water pump is mechanical. I doubt it is bad. Is there mud in the radiator? Is the thermostat opening? Your fan might be working but it might not be turning fast enough. I would try to run with no thermostat to see if that works.

[speedfreaksguy]

Other things to check;

Jetting, lean and rich conditions can cause excess heat

Radiator cap, A faulty radiator cap can also cause the radiator to overflow.


Did you just top off the radiator?? I know my R will blow some coolant if I fill it to the top.

[nh591]

it ran fine all year till this past weekend at highpoint so something obviously went bad