When my car is hot the coolant water starts to bubble. I have seen this in the little pipe behind the passenger head light with the yellow cap. Is this bad or is it air in the system or somthing else? my car is a my99. Any ideas?

cheers Jason

 

Jas, I am very sorry to say in my experience of my Sti v3 the bubbles = head gaskets gone!
If you drive your car VERY hard and the bubbles and coolant are discharges from the location you say then the gaskets are gone. The bubbles can keep emmerging even minutes after the engine is switched off.

If you want further advice call David at www.apiengines.co.uk and take it from there.
Sorry, been there just 4 weeks ago!

911

 

is there any other symptoms when the head gasket goes?

 

my car is the same jas has done this for 12 mouths now

 

how do you know? when did you last check?

 

every weekend

 

so why does it do it for?

 

you hit the red line to much it then puts lots of air in the water is there oil in the coolant on the left side