If this is a really stupid question...

[ziggy_mini]

I apologise now but why is my header tank filling up with water when I run engine? If this is usual then I will crawl back in my ignorant hole I came out of but never seen this before? It is the small hose going in near the top of tank.

Jaine

 

[Leeshez]

Yes this is normal because the coolant is hot in the radiator and the header tank is cooling it down

 

[ben_p]

thought this is just the water going round the engine via the pump

 

[ziggy_mini]

The header on my mini does not have water pumping into it though...
???

 

[Leeshez]

My old mini never had a tank also. This was because the fan ran all the time to keep the radiator cool

 

[ziggy_mini]

Mine is the injected one with a header & rad at the front now!! Superb I will be watching it tomorrow now see the water going in !!
jaine

 

[Leeshez]

Don,t take the cap off while it is hot or it will blow up in your face and burn