BF5 GT pissing coolant

[Guest boostin]

Chuck it on stands and run it. Maybe stick Drunken under there cos its not much fun being hit with hot coolant.

[Shale]

 boostin said:

Chuck it on stands and run it. Maybe stick Drunken under there cos its not much fun being hit with hot coolant.

Now there's a solid plan ;D

On a serious note, that might be the better way of indulging on some careful observation.

[Max Headroom]

 Shale said:

Snip:

The header tank leaks like a sieve, particularly after a hard day's boosting. It's got a new (as in out of the box) radiator cap on and it still dribbles. Always dried rusty crap left on top of it.

Shale, if you've got rusty crap in the cooling system, it's possible that the radiator core is partially blocked. I had that problem with my GT last year. It overheated after any distance, or while towing, or climbing big hills and would puke coolant out of the overflow. I suspected headgaskets, but we took a systematic approach and checked everything. The similar clue to your car was rusty crud.

We replaced the waterpump 'cos it was an unknown quantity. The thermostat and radiator cap were also replaced for peace of mind. We also ran some cooling system cleaner through a few times to dislodge the crud. The radiator got a proper flush but the problem remained, and we realised that the radiator was still blocked with crud because it was hot at one end but cold at the other. We finally fitted another radiator which was known to be good, and the problem was solved. The car has since done 30,000km with no further temp issues or water loss, and the needle firmly remains a smidgen below mid-way on the gauge.

[Scoobydoo]

Why don't you just take it to mechanic and get the system pressure tested. They'll be able to pinpoint exactly where it's coming from. Then you won't have to take any stabs in the dark.

I'm glad I got mine done recently, as they found out my radiator was stuffed.