Foamy Coolant.

[Psymon]

Howdy all. Just doing a routine check around the engine bay of my R32 (RB20). I decided to check the cooling system for air so i was running the car with the bleed screw on the inlet manifold removed. Basically the coolant that was coming out of this hole was very very foamy. I checked the coolant in the radiator and its not oily at all.

Is this a sign that i've done my head gasket?

[R33S2]

take the cap off the radiator and fill it up, are there any bubbles coming out? does the car overheat? have you lost alot of coolant? If you are in doubt go to any radiator place and get them to check it, peace of mind over lots of work.

[Psymon]

I filled it up just then when i was checking it. No foam or anything around radiator cap. Car doesn't overheat. Temperature gauge normally reads halfway or slightly above.

However the car did over heat on a trip back from Sydney a few weeks ago and it overheated once last year when i got a crack in one of those tiny water lines under the inlet manifold that was impossible to find!

[SECURITY]

turn your heater on if your car over-heats, it'll allow more coolant to flow through your radiator, thats just to get you out of trouble to get you home.

unless you saw milky kind of crap in your radiator and its not constantly overheating then i dont think you've done a head gasket.