Ruby Red Audi S2 Avant

[Michael S2]

Glad i checked the hose UrS4boy and Newsh pointed out to me... i think this is the source of my leak. I previously posted that it wasn't wet above thermostat housing but checking again it is definately wet around this hose.

I will change this hose, thermostat, thermostat seal and also the other small hose to thermostat. I will clean up the oil sensors, maybe i should replace them since i have everything out the way, but i have to draw a line somewhere.

If anyone wants a laugh... the hose that ends in a banjo bolt i only need 160mm. Audi quote: £17.01 per metre but its special order so i'd need to order 5m = £85.05

I will order the roose ancilary kit which looks to include these 2 hoses... i presume these are suitable for this?

[anthonys2]

Howay Michael work your magic lol!! was looking forward to seeing this!!

[Michael S2]

I'll give the area a clean best i can, i think theres been a small water leak for a while because theres a lot of build up of silty/rusty stuff around the housing.

Lovely motor there Michael, look forward to seeing it at Creiff.

Crieff is looking unlikely for me now

[Tonybolony]

I have a coolant leak on the avant:


Definately coming from the area pictured. Its dry from the thermostat housing up.

By the time i got everything off out the way to investigate, it was nearly dried up... i'm not sure if its coming from the thermostat housing or the small pipe. Guess its best to take the housing off and have a look.

Have read about the small pipe leaking but has anyone heard of leaks from thermostat housing?

Bl**dy H*ll, that whole area looks well sh*tted up!!
I pressure-washed under-bonnet a few times myself, but obviously couldn't get at that bit. It also explains why i needed to top up the expansion tank (2-3 times) during my 2 years with her. Hope you get it sorted Bud.
(If you ever get her on a Dyno, I'd LOVE to see the figures)
One other thing- now that you have good access to that area, it reminds me that I did a Temp repair of the cables to the MFTS (again- access is a nightmare unless radiator out). May be worth spending half an hour on this.

[fourwh33ldriv3]

Lovely motor there Michael, look forward to seeing it at Creiff.

[Michael S2]

thanks see it now

[newsh]

As posted by Dave, its the turbo coolant return line which ends in a banjo bolt on the water manifold. item 27 http://forums.quattroworld.com/s4s6/msgs/72682.phtml

[macspring]

Not funny to get to is it

While you're in there.

Clean or replace that oil pressure switch.
Change the small hose that goes off to the pipe round the front behind the cam cover.
Remove clean and/or replace and retorque the knock sensors.

Anything else?

Agree with all of these, was about to post same when I saw your photo.

Bit of degreasing to do ?

[Michael S2]

Thanks Andy and Voursch, definately worth replacing when i'm in the area.

Thanks Newsh, PITA to get radiator and fan out... i know i'm going to forget to connect something when putting it all back.
Can't think what other pipe you mean but i'll check again...not a job i want to repeat anytime soon

Great links UrS4boy bit confusing for a novice mechanic like myself

[UrS4boy]

While you're in there:
Clean or replace that oil pressure switch.
Change the small hose that goes off to the pipe round the front behind the cam cover.
Remove clean and/or replace and retorque the knock sensors.

In case it is needed, here are some links to more info:

Oil pressure switch info:

http://forums.quattroworld.com/s4s6/msgs/96161.phtml

Turbo coolant return line info:

http://forums.quattroworld.com/s4s6/msgs/72682.phtml

Knock Sensor info:

http://forums.quattroworld.com/s4s6/msgs/21047.phtml

[newsh]

Not funny to get to is it

While you're in there.

Clean or replace that oil pressure switch.
Change the small hose that goes off to the pipe round the front behind the cam cover.
Remove clean and/or replace and retorque the knock sensors.

Anything else?

[Vorsprung durch Technik]

Yeah that's it.The big rubber o ring has probably gone. Would need to clean the area up first and then the block and thermo housing once the thermotat housing is removed.Change the thermostat for a new one but check it works first with a thermometer and bring up in a pan towards the opening temperature which is 87 degrees.

[andy10v]

There is a big O ring between the thermostat housing and the block, it can leak there, pipe off to the side can leak as you say.

[Michael S2]

help please

I have a coolant leak on the avant:


Definately coming from the area pictured. Its dry from the thermostat housing up.

By the time i got everything off out the way to investigate, it was nearly dried up... i'm not sure if its coming from the thermostat housing or the small pipe. Guess its best to take the housing off and have a look.

Have read about the small pipe leaking but has anyone heard of leaks from thermostat housing?

[Michael S2]

Good to hear you have got another S2
Will miss Crieff but maybe there will be another meet soon.

cheers

Steve

cheers Steve, shame you won't make it, another meet in the summer would be good

More nice pics only thing I would do and its only my opinion would be to get rid of the tow bar late otherwise perfect

Agree Anthony, it will be off when i get a chance

Yeah, Mike - I thought you were in a hurry to get rid of the Towbar

Great to hear all these positive comments about her- as if I wasn't missing her enough already

Enjoy, Buddy

Cheers bud, was well worth the long journey to collect this beauty. Would keep the towbar, but i have nothing to tow

oh... and the RS4 wheels are going nowhere, they will be refurbed as well at some point