E46 cooling issues airlock ?

[6POTVEC]

HI my nephew has a 2.2 E46 which poped a hole in the header tank .
I have replaced the tank ran faor a while on tickover untill all the air was out , he drove ebout a mile when the gauge whent into the red . brought the car back and i have changed the stat but i have noticed no hot or even warm air coming from the heaters .
any clues as to the problem
cheers
Paul

[6POTVEC]

OOHHH ok stat is changed for a new one how do i tell if the pump is fubared ?
running with cap off it seems to be flowing ok

[6POTVEC]

nope not sure its bled properly at all .......
what is the correct method please

[6POTVEC]

will look into replacing the pump cheers.
any idea what would have blown the expansion tank in the first place ?
surely a worn pump wouldn`t build anywhere near enough pressure to do this ?
Head gasket failure perhaps ?
thanks for your help so far fellas not arguing or disagreing (sp)just trying to get to the cause of the problem
many thanks again