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Old 03-07-2017   #1
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Twinair coolant leak from turbo the pipe

My 2012 twinair 85 is leaking very slowly from the coolent tank where the pipe for the turbo connects.

I tried to put additional clamp near the old one, the leak seemed to stop for a week but its returned slightly.

Has anyone had this problem? Is it the pipe? The plastic bottle? Only the clamp? Can I still go to a track day? Thanks
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Old 03-07-2017   #2
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Re: Twinair coolant leak from turbo the pipe

Have you tried taking the pipe off of the bottle to see if either are damaged?
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Old 03-07-2017   #3
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Re: Twinair coolant leak from turbo the pipe

Quote Originally Posted by liorwohl View Post
Can I still go to a track day? Thanks
You're taking a risk by driving it at all with a coolant leak. If it gets worse, you could cause permanent damage to the engine before the temperature gauge even shows a problem.
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Old 03-07-2017   #4
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Re: Twinair coolant leak from turbo the pipe

Im afraid to take it off to see as i might break it while doing it.. Thought maybe its a common problem so i will be able to buy the part before.

(The leak currently is very weak, its not even changing the water level in the tank and im checking it every day.)
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Old 04-07-2017   #5
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Re: Twinair coolant leak from turbo the pipe

Tanks are known to be brittle. Change it.

D
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Old 04-07-2017   #6
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Re: Twinair coolant leak from turbo the pipe

I had this very problem when mine was about 4 years old. I examined the spigot on the tank and couldn't see anything wrong, such as a crack. The inside is reinforced with a metal tube, by the way.

I then replaced the pipe. This part includes the metal fitting at the turbo end, so it cost about 50. This made no difference. I considered replacing the tank, but then tried a smear of plumbers silicon and a second jubilee clip. No more leaks up to when I sold the car at 6 years old.

The leak on mine was very minor - it would take a few weeks and several hundred miles for the coolant level to drop appreciably. I guess the way to ensure a proper fix is to fit a new tank and pipe. Likely to cost at least 100 in parts plus coolant.

At least the tank is positioned so you can easily monitor the leak and the level. When I reported this issue on this forum a couple of years ago nobody else responded so I guess it is quite unusual.
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Old 04-07-2017   #7
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Re: Twinair coolant leak from turbo the pipe

Oh, and taking the pipe off wasn't a problem. Coolant only flows through it when the engine is running, and if you anchor the open end above the tank you won't lose coolant. Best to only fiddle when it's cool, though, and slowly loosen the tank's pressure cap first.
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Old 04-07-2017   #8
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Re: Twinair coolant leak from turbo the pipe

Quote Originally Posted by TrevC View Post
Oh, and taking the pipe off wasn't a problem.
thanks
the plastic part that the pipe connects to wasnt looking fragile? i really want to avoid replacing it just because i took the pipe off to look and broke it
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Old 04-07-2017   #9
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Re: Twinair coolant leak from turbo the pipe

I found that when I slackened the hose clip the hose pulled off quite easily. As I said, the spigot pipe on the tank has a metal tube inside it to prevent crushing. If removing the hose causes the pipe on the tank to break, chances are it was damaged and needed replacing anyway.

Try removing the hose from the tank. Dry everything, then put a smear of plumbers or aquarium sealant around the tank spigot. Put two new hose clips on the hose, with their screws on opposite sides, then push the hose back on and tighten the clips. Give the sealant a few hours to set before running the engine.

No guarantees, but it worked for me. If it looks like it's fixed, clean away all traces of pink residue, then keep a close eye to see if any more appears.

If this doesn't work, as I said above suggest a new tank and hose. I've no idea what the real problem is.
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Old 04-07-2017   #10
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Re: Twinair coolant leak from turbo the pipe

Thanks i will try that
I just drove right now and the leak is defently getting worse
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Old 15-07-2017   #11
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Twinair coolant leak from turbo the pipe

Same here on 3/2011 TA Turbo.

Removed the hose coming from turbo to find the leak.

The distal part of the plastic pipe remained in the hose.
The proximal part showed a crack (photo).

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Replaced it by a new tank of latest design (plastic pipe instead of metal pipe, within the now thicker turbo hose pipe) and no metal pipe within the other tank pipes.
I suspect that the inner plastic pipe at the turbo hose pipe is a kind of temperature isolation for the tank pipe, since the additional plastic pipe inside the tank pipe isolates better than metal.

The complete tank Costs 60 and part number is
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Last edited by larslarsen; 15-07-2017 at 16:48.
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Old 15-07-2017   #12
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Re: Twinair coolant leak from turbo the pipe

Good pictures; a very useful post .
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Old 16-07-2017   #13
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Re: Twinair coolant leak from turbo the pipe

in mine it wasnt broken. it had the metal pipe inside the plastic.
just removed the pipe, cleaned the area, replaced the clamp with two new ones in opposite direction. leak seems to stop. (i didnt put a sealer)
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Last edited by liorwohl; 16-07-2017 at 06:28.
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Old 16-07-2017   #14
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Re: Twinair coolant leak from turbo the pipe

Since FIAT changed the design of the turbo hose pipe, I suspect that a general problem exists, what has been corrected with new design tank.

I suggest to replace the tank, because if there is already a small leak and you solve it with clamps or sealing, you take the risk of sudden coolant loss, if the pipe pulls off suddenly while driving.

This will be for sure more expensive than replacing the tank, in my opinion.
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Old 16-07-2017   #15
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Re: Twinair coolant leak from turbo the pipe

so if i get the new tank, I also have to replace the hose?

where i live everything is super expansive, will cost 300 euro easily.. need to bring the parts with me from Italy
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