dj219957

just got a n plate wrx estate - great car but had problems with header tank boiling over after hard runs. n.b just had car serviced. Anyone know why this is? Also find it hard to shift gears quckily without the car jerking. Seems to be some noise from the back diff?

scooby_si

is it a plastic tank or the later metal un? Placcy uns are infamous for gettign bonus leaks but not sure as that's even ehat you describe? U kud get a metal un from a breakers thou if that was the issue
Si

dj219957

its a metal one but leaks from the seems cos the pressure gets so great.

trout2

When this happened to me, I found that the cylinder head had a hairline fracture. This was allowing the pressure to decrease and boiling the water. This can be checked by putting a sencer in the header tank to check for gases. Try your local garage.

Good Luck