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LArge Coolant leaK!!! I have a question.

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Old 02-24-06, 12:03 PM
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LArge Coolant leaK!!! I have a question.

Hey guys I've had a coolant leak for about a week now and it's been progressively getting worse. The other day I was trying to figure out where it was coming from and i heard gurgling and I saw mist spraying coming from about the top of the engine or inbetween the engine and intake manifold.

My question is... Do you think this is a coolant leak of the engine block or could this be coming from the intake manifold? Is there coolant lines that run through the manifold?

Any help would be greatly appreciated.

Thanks.
Old 02-24-06, 12:52 PM
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most likely the water hose connecting the block to the TB.
Old 02-24-06, 01:05 PM
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yeah...thats what it sounds like....its a BITCH to get back on...HAVE FUN!!!


i made mine extra long and looped it around....made it easier
Old 02-24-06, 01:07 PM
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can you fix this undernieth the car? i think i have the same problem.
Old 02-24-06, 01:12 PM
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no, you have to take the TB/UIM off and fix it from up top
Old 02-24-06, 01:15 PM
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There's a coolant line that runs from the top of the engine block to the throttle body, one that loops across the throttle body, and one that runs from the throttle body to the back of the water pump. The one going from the engine block to the throttle body is the one that usually goes - pull the intake manifold off and replace the line.

-=Russ=-
Old 02-24-06, 01:21 PM
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oh THAT coolant line. aw damnit, i had to fix that on my last fc. i got lucky, i only had to cut and refit near the top. are there any coolant lines to the lower left side, kinda right above the exhaust manifold?
Old 02-24-06, 01:56 PM
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Originally Posted by cool_as_crap
are there any coolant lines to the lower left side, kinda right above the exhaust manifold?
On a non-turbo, no. On a turbo, there's a set of coolant passages into the lower intake manifold. The passage between the housings & LIM is sealed by o-rings, which do tend to get old and stop sealing.

-=Russ=-
Old 02-24-06, 07:10 PM
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Originally Posted by MattB
...its a BITCH to get back on...
It's easy if you do it the right way. Pull the rubber elbow off the TB, replace the squeeze clamps with screw clamps and us a little spray lube on the thermowax connection.


Last edited by NZConvertible; 02-24-06 at 07:12 PM.
Old 02-24-06, 07:12 PM
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Well yeah everything is easy if you do it the right way.
Old 02-24-06, 08:54 PM
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How do I get that TB to Housing line off and on without tearing apart the intake? thing is tighter than a crabs ***...
Old 02-24-06, 10:22 PM
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is it possible to replace the hose without taking the UIM off?
Old 02-25-06, 01:02 AM
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On my S4 NA, there's no way to get the hose without taking the intake manifold off.

Perks of emissions removal: I can pull the UIM off in 10 minutes while holding a conversation with someone.

-=Russ=-
Old 02-25-06, 04:53 PM
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Originally Posted by rurouni2071
is it possible to replace the hose without taking the UIM off?
Not if the engine's in the car.
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