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S6 Devil

Original Poster:

3,323 posts

117 months

[news] 
Friday 14th September 2012 quote quote all
How odd! Just been for a run, temp staying around 95c at idle with both fans kicking in. I then let it cool and checked the filler neck which only had a small puddle of fluid in it. I therefore filled it up again, it took a whole litre of coolant.

I thought I'd found the leak. There is no coolant leaking under the car. WTF!!!

SteveTusc

143 posts

79 months

[news] 
Friday 14th September 2012 quote quote all
S6 Devil said:
How odd! Just been for a run, temp staying around 95c at idle with both fans kicking in. I then let it cool and checked the filler neck which only had a small puddle of fluid in it. I therefore filled it up again, it took a whole litre of coolant.

I thought I'd found the leak. There is no coolant leaking under the car. WTF!!!
I've believe you get issues like this when the rad cap fails. I think you get air in the system where it doesn't hold pressure. The air pockets make it seem like you've used coolant. Worth putting a new one on there just in case. Apparently you need to use a genuine vw one, as the ones from GSF fail pretty quickly.

S6 Devil

Original Poster:

3,323 posts

117 months

[news] 
Saturday 15th September 2012 quote quote all
Thanks, cap bought. Fingers crossed!

SteveTusc

143 posts

79 months

[news] 
Saturday 15th September 2012 quote quote all
Good luck!

S6 Devil

Original Poster:

3,323 posts

117 months

[news] 
Tuesday 19th March 2013 quote quote all
The saga continues...
New rad cap fitted and all temps fine.

Not used the car much over winter but 6 months from the start of this post, I have discovered a coolant puddle on the passenger side by the front wheel. I therefore fitted new ACT hoses and bled the radiator, but still have coolant leaking from the same place. The radiator is an ally one fitted by Power in 2008, 10,000 miles ago. Surely this can't be leaking after 10,000 miles?
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m4tti

1,603 posts

39 months

[news] 
Tuesday 19th March 2013 quote quote all
Vacuum or pressure test will tell you. Even if its the rad you more than likely be able to have it repaired.

Don1

10,706 posts

92 months

[news] 
Tuesday 19th March 2013 quote quote all
Is there a bleed screw fitted in the new pipes? I only ask as mine leaked from new, and needed replacing.

S6 Devil

Original Poster:

3,323 posts

117 months

[news] 
Tuesday 19th March 2013 quote quote all
I have the ACT hoses so don't think there is a bleed screw fitted.

How do I do a vacuum/pressure test?

Don1

10,706 posts

92 months

[news] 
Tuesday 19th March 2013 quote quote all
Mine were the ACT hoses, but for the Sag - not sure if yours have one. Just a thought!

m4tti

1,603 posts

39 months

[news] 
Tuesday 19th March 2013 quote quote all
S6 Devil said:
I have the ACT hoses so don't think there is a bleed screw fitted.

How do I do a vacuum/pressure test?
With something like this http://www.amazon.co.uk/Cooling-Pressure-Universal...

I have a vacuum tool, but the vacuum tool requires dropping all the coolant out really. The leak even if minute shows up as the system wont hold a vacuum, the loss of which shows up on a gauge.

The good thing with the vacuum purge tool is if theres no leak, you stick the inlet hose in a bucket of coolant and it sucks it all back in replacing the air.... requires little or no bleeding.

S6 Devil

Original Poster:

3,323 posts

117 months

[news] 
Tuesday 19th March 2013 quote quote all
m4tti said:
With something like this http://www.amazon.co.uk/Cooling-Pressure-Universal...

I have a vacuum tool, but the vacuum tool requires dropping all the coolant out really. The leak even if minute shows up as the system wont hold a vacuum, the loss of which shows up on a gauge.

The good thing with the vacuum purge tool is if theres no leak, you stick the inlet hose in a bucket of coolant and it sucks it all back in replacing the air.... requires little or no bleeding.
Thanks. I'll see if my local garage has one thumbup

nrick

1,552 posts

47 months

[news] 
Thursday 28th March 2013 quote quote all
Hi S6devil

I had this when I started to mess, the steel pipe at the front of the engine leaked and I decided to change the hoses, thermostat, coolant and cap. 3 months later I would fill it up, run it and it would be fine and then spit coolant everywhere.

I changed to a VW cap and the advice was let it find its own level. I bled it 20 times I reckon, and each time it would do the same. I'd fill it up, run it and then it would spit coolant over the floor. Frustrated I rang a few people and the advice was let it find its own level, they are all different. Keep an eye on the temps, if it is running normally then don't worry.

It seems the more you mess with these cars the worse things get.

If the temps can't stay below 96 and there is constant coolant leaks then it might be a headgasket or other woes, but having spent 3 months worrying about rebuilds it has been fine for 12 months. There is an issue that there isn't lots of head on the system so some of the Sag guys have jacked up the front of the car and built funnels to help the bleeding.

Hope that helps,


One other pont the silicone hoses need regular tightening as they creep after a while.

m4tti

1,603 posts

39 months

[news] 
Thursday 28th March 2013 quote quote all
If its by the front wheel double check its not a weeping oil cooler. Mine was slightly so I rebuilt it but wouldn't have thought you'd get a puddle.

It's more than likely as Neill says just finding its level I went through this. In the tank elbow I only have about 3 mm of coolant. Anymore it simply ejects it when hot. It never goes beyond 95 in the summer so I've left the level where it is.

nrick

1,552 posts

47 months

[news] 
Thursday 28th March 2013 quote quote all
m4tti said:
If its by the front wheel double check its not a weeping oil cooler. Mine was slightly so I rebuilt it but wouldn't have thought you'd get a puddle.

It's more than likely as Neill says just finding its level I went through this. In the tank elbow I only have about 3 mm of coolant. Anymore it simply ejects it when hot. It never goes beyond 95 in the summer so I've left the level where it is.
Good Man........
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