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Old 02-03-2012, 08:36 PM   #1
KryptoNyte
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Default Turbo inlet, rubber hose, wet with coolant?

I have noticed that this hose, a few inches in diameter, seems to be wet all the time, and there is a constant smell of coolant under the hood (I've been chasing it for months now). I ended up changing out the zee-shaped hose directly above it that receives coolant from the small turbo reservoir as it looked like it was getting soft (the changeout hose is about an inch in diam).

Well, a week later, I still have this constant hot, antifreeze/coolant smell coming from under the hood, and that large hose on the turbo inlet is still constantly damp, at least it appears it is.

What am I missing?
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Old 02-04-2012, 02:06 AM   #2
esteve
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2006 STI

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Did you reuse the stock hose clamps? I've found that once you open them up, they get weak and lose their tension. My guess is the factory clamp on the z-shaped hose you changed (reservoir tank to turbo) is allowing coolant to drip down on the turbo housing onto your turbo inlet. After I did my turbo swap, I traced 3 separate coolant leaks (upper turbo coolant hose, lower turbo coolant hose and lower reservoir hose)...basically all the coolant hoses I touched were leaking from the stock clamps.

I got some nice worm-drive hose clamps from McMaster-Carr that don't eat into the rubber and that fixed all the leaks.

That z-shaped hose got all soft on my car as well, the turbo end started ballooning so I replaced it too. I cut off the end that ballooned up and it made a perfect PCV hose for my Samco turbo inlet.
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Old 02-04-2012, 09:12 PM   #3
KryptoNyte
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I did re-use the stock hose clamps, I was concerned as you were that anything else would eat into the hose when it's soft. I've been checking that zee shaped hose religously, though, when hot, and it's perfectly dry every time.

Maybe it's a different hose that's keep that larger inlet hose wet all the time ...
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Old 02-05-2012, 12:21 AM   #4
esteve
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Well, the leaky hoses I had looked all dry too whenever I checked. They only leaked while I was driving and the heat from the turbo burned off most of the traces of coolant. Even with my car idling, there wasn't enough water pressure to cause any leaks.

I would get some nice liner or smooth-band hose clamps and see if that fixes the leak. Also, maybe check the reservoir tank and lower reservoir hose for leaks.

If all else fails, you could take your car to a shop and have it pressure tested.
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Old 02-05-2012, 06:37 PM   #5
KryptoNyte
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Will do Steve, thanks for the input.
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