hi everyone.

can you please help me with this problem..

just finished restoring my car, passed mot drove it for about 10 miles, love it.

now everytime it gets warm( does not over heat) there is a bubbling noise coming from the header tank, now its sprang a leak.

before mot, i fitted a new low temp thermstat, new cossie fan switch and all new silicone hoses. the fan kicks in and cuts out when cooled.

have i got an air lock?
i ran it for 20 mins with cap off when all the above parts where fitted.

if so how do i bleed the cooling system?

if not any ideas what the problem is???

many thanks Ryan.