davewalker

i Have bubbles in my top up tank for the coolant the car isnt over heating and i dont think its loosing any water could this be a cyclinder head gasket failure its an 06 spec D
also to i noticed the temperature rose slighty after having my foot down abit but then returned to normal but the heaters werent working i turned the car off and started it up again and the heaters were working fine any ideas and reccomendations where to take it to have it checked

mickywrx

iTrader: (29)

www.asperformance.com
www.revolution247.com

davewalker

Thanks is As performance any good iam from birtley but have never used them

M4RKG

iTrader: (22)

Subaru in north shields have never charged me over the odds

Butty

iTrader: (2)

Any little grey/black bits floating in the coolant of the header/expansion tanks?
Coolant level in expansion tank rising after a good run and still at same level next morning when cold?

scoobystiv8

Darren and Harvey at DLM in Darlington, excellent service and as for experience there second to non.

alcazar

iTrader: (2)

Another vote for Darren and Harvey, they won't overcharge either.

davewalker

no not that i can see just the bubbles but the water looks abit greasy and when i start the car up i can here the wooshing of running water behind the dash it sounds but the coolant tank is a bit grubby inside but its hardened on the walls i havent had the car long

mickywrx

iTrader: (29)

You won't go wrong with any of the mentioned places, since you're in Birtley, it make sense for Alyn at ASP to be your first point of call.

Harvey certainly knows his stuff, and his wife makes a lovely cup of tea; but I've not had any work done by Harvey or Darren.

davewalker

anyone come across out like this before does it sound like the head gasket and what sort of cost is it to repair

alcazar

iTrader: (2)

Dude, you are wasting your, and our, time on here. Get a sniff test done by a reputable garage. Then you'll know. NO-ONE can diagnose it over the internet.

Repair is between £800 and £1700 depending on the work needed.

davewalker

took the car to gmd subaru and they seem to think its not the head gasket even with all the symtoms i have they said the thermostat is at fault and the car had been over heating even tho i told them it wasnt showing on the temperature guage ad overheating has anyone heard any thing like this before with bubbles in the coolant tank etc

alcazar

iTrader: (2)

I'll say again:
Dude, you are wasting your, and our, time on here. Get a sniff test done by a reputable garage. Then you'll know. NO-ONE can diagnose it over the internet.

Repair is between £800 and £1700 depending on the work needed.
__________________

davewalker

can you not read mate its been to a subaru dealership and am saying what they said and asking any members if they have heard of similar symtoms with a thermostat fault so but out if you nothing to input your wasting your own time by keep posting on my thread

alcazar

iTrader: (2)

So they did a sniff test?

davewalker

i dont know what they did iam not a mechanic but they checked it over and said it wasnt the head gasket they said it was something to do with the thermostat iam none the wiser thats why i was asking if the thermostat can cause symtoms like that

cdm1

iTrader: (5)

Darren at DLM Darlington you wont go wrong there

prodriverules

iTrader: (52)

Alright mate if its not over heating i wouldn't think its the stat as that would make it over heat if stuck closed or slow working,you could try a expantion cap as if it isn't holding pressure in the system then it could be lowering the boiling point of the water?

davewalker

the dealer said it was overheating but my needle bareley moved only when giving it some boost it crept up just a little

Butty

iTrader: (2)

My head gasket problems started in a similar fashion (06 STi).

A sniffer test showed nothing as the heads were lifting slightly only above 1 bar, which is difficult to reproduce when stationary in a garage.

Just keep an eye out in the next few months for the expansion tank level going up but not back down, the header tank level dropping (the combustion gas is forcing coolant out to the expansion tank). This also gives symptoms of a thermostat failure (cold bottom hose) due to an air lock.
Slight overheating on a good run.
Black bits in the coolant (HG sealant coming away).

For me, there was no sudden HG failure, it all happened slowly over about 10k miles until I could stand it no longer and did a rebuild.

Hopefully it is as simple as the thermostat, but STi 06 HG failures have been noted.

Butty

iTrader: (2)

My head gasket problems started in a similar fashion (06 STi).

A sniffer test showed nothing as the heads were lifting slightly only above 1 bar, which is difficult to reproduce when stationary in a garage.

Just keep an eye out in the next few months for the expansion tank level going up but not back down, the header tank level dropping (the combustion gas is forcing coolant out to the expansion tank). This also gives symptoms of a thermostat failure (cold bottom hose) due to an air lock.
Slight overheating on a good run.
Black bits in the coolant (HG sealant coming away).

For me, there was no sudden HG failure, it all happened slowly over about 10k miles until I could stand it no longer and did a rebuild.

Hopefully it is as simple as the thermostat, but STi 06 HG failures have been noted.

davewalker

thanks butty