coolant tank not filling from top up?

Post by **Hacksawbob** » 15 Nov 2005, 22:16

Hi I have a small coolant leak on the head, but the header tank doesn't seem to be filling from the resevoir (top up) any ideas? I've given it a bleed this evening only small ammount of air came out of the rad.

Post by **Hacksawbob** » 23 Nov 2005, 20:27

did it agian to day...

Post by **T'Onion** » 23 Nov 2005, 20:30

is the cap working Bob? is the pipe clear ... could be the leak thats stopping it suck back

Post by **Hacksawbob** » 23 Nov 2005, 20:38

never been clear on how this works, does the top cap act as a one way valve to suck in coolant in the top as the level drop? or does it enter via the bottom tube?

Post by **T'Onion** » 23 Nov 2005, 20:45

Bob it blows hot coolant into the res. tank as it expands and then as the coolant cools it sucks it back into the rad tank, but cos yours is leaking its not sealed is it so not a full vaccum

Post by **Hacksawbob** » 23 Nov 2005, 21:52

blimey so means sucking in air through leak on cool down? hhhhmmmm, want to get that fixed really.... cheers laughing shallot