paceo

iTrader: (5)

got some coolant coming out of the header tank overflow on the golf vr6 1992 obd1 when the car is being thrashed.

tried getting all the air out of the system by leaving heaters on full blow and squeezing pipes!

not the thermostat as it kicks in nice and both radiator pipes are hot (not one hot and one cold pipe)

possible headgasket? but theres no oil in the water or visa versa! ??????

GVK.

Get a new header tank cap, the seal fooks up on them.

Can you see coolant coming back through the return ok?

paceo

iTrader: (5)

yep return is fine buddy flows nice!

header tank and cap and brand new about 2k ago as the old tank was so stained!

will do compression test tomorrow!

ive got some new relays coming tomorrow as well

paul16v

Take the cap off and make sure the seal has not flipped over, common fault with them.

paceo

iTrader: (5)

its not coming out of the cap bud, its coming out of the overflow.

botters

iTrader: (2)

you dont always get oil and water mixing when a head gasket fails i would make sure it has the correct mixture of water and antifreeze in it as the fans come on just over 100 degrees on these (ignore the guage they are not at all accurate compared to live data on a management scanner) so if it doesnt have enough antifreeze in it it can boil as antifreeze also raises the boiling point of water as well as stopping it freezing
tho as above its probably the seal on the cap as this would cause a loss of pressure in the system again causing it to boil up through the overflow

paceo

iTrader: (5)

cool bought the cap new a while back but ill try another!

paul16v

It comes out of the overflow when the seal on the cap flips over, had it happen to me and seen it happen loads of times.

GVK.

Yep, have seen it on late mk2s with the same 'flat' cap as the mk3.

paceo

iTrader: (5)

wicked going to have a look now when chelsea game is at half time

paul16v

Alot of the VAG group cars share the same cap and its not a very highlighted problem, a few years ago a lad I know had quite a new at the time ibiza 16v curpa, he changed a thermostat, waterpump, headgasket and then finally the engine cost him all in around 3.5k!

I went round and pointed this out to him within 30 seconds I actually thought he was going to start crying

paceo

iTrader: (5)

checked the cap and the seal doesnt look flipped over at all!

GVK.

LOL - I digress but had similar thing years ago on a Sierra that was overheating, bloke had fitted water pump/ stat/rad all the usual. I had a look and the return was blocked in the header tank - one 3mm drill bit later and all was good.

paceo

iTrader: (5)

tried a new cap today and threashed the hell out of it, seems to be ok! at the moment!

just got to sort this fucking idle out

Psycho Warren

iTrader: (5)

for what they cost its worth having a couple of exhaust gas coolant test kits in the toolkit to reduce the "headgasket gone" paranoia.

Or maybe thats just with cossies