Can't "give it grief" cos problems..need help

[Dan B]

Help...can only ride steady cos ....

When flogging the bike – the expansion bottle fills from the radiator and comes out the overflow and thus I’m losing water /coolant.

However, when riding the bike steady – it does as it should – the expansion bottle fills from the radiator and is drawn back into the radiator when cool.

Anyone know why the water is not being drawn back into the radiator from expansion bottle when the bike is ridden hard?

(1) Thermostat changed. (2) Radiator cap changed. (3) Radiator flushed and coolant changed.

Cheers!

[martinc]

Interesting...check on the water pump side.

[Wheat]

What year?

[Dan B]

Originally posted by Wheatman
What year?

99 on a T

[Dan B]

Had thought it might be the waterpump but any other feedback before I shell out £200 for a pump is what Im after.

Cos someone had also said to buy a cylinder head testing kit but have been told these are not too reliable.