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Old 02-27-2013, 05:42 PM   #1
Gmfergione
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Member#: 338461
Join Date: Nov 2012
Chapter/Region: E. Canada
Default Coolant leak after replacing clutch

My apologies if this gets posted twice


Recently I pulled the motor on my 2002 WRX 2.0L 5MT to replace the clutch.

Once I got everything back together, it ran beautifully! New oil, new coolant, new clutch. Awesome.

Well, when I got home from work the other day, I noticed there was a white smoke coming from under the hood...so I got under there again today and noticed that coolant was pooling on the engine block - so I ripped out the battery, intercooler, AC, and alternator to see. I couldnt find a leak anywhere visually - from any angle.

Cleaned it up, put it back together and took it for another drive. came back, and its pooling in the same spot however it just wasnt hot enough to smoke it.

Anybody got some advice? Had something similar?

Pics of the areas where it was pooling below:


Looking right below the intake manifold on the drivers side, behind where the AC would be
http://i1164.photobucket.com/albums/...ps358be1db.jpg


Looking right below the intake manifold on the back, where the engine meets the transmission. driver side.
http://i1164.photobucket.com/albums/...ps74470815.jpg

The temperature as indicated by the dash board is fine, maybe a needle thickness above the first line near C, but the overfill resivour will lose a little coolant
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Old 02-27-2013, 06:01 PM   #2
Gmfergione
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Looking at other threads, I saw that throttle body coolant leak was popular, I checked it out and didnt see much, hoses looked clear


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Old 02-27-2013, 06:02 PM   #3
PSBeachBum
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Member#: 279870
Join Date: Apr 2011
Chapter/Region: MAIC
Location: Honolulu, Hawaii
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2005 WRX Wagon
Black

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Get to a shop and have them pressure test your coolant system. When they start to pressurize the leak will be revealed. I had a similar leak and it was the coolant host right below the throttle body. Luckily mine was the the end of the hose so i just cut it and moved the clamp back. PRESSURE TEST will help you.
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Old 02-27-2013, 07:05 PM   #4
Cois32
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Join Date: Sep 2011
Chapter/Region: Tri-State
Location: Delco,PA
Vehicle:
2004 Impreza WRX
WRB vf39'd

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theres a coolant passage thats underneath the intake manifold and goes across the block...also throttle body coolant hose may appear fine but when driving coolant can still be sprayingg in that area. do the TB coolant mod or replace those clamps.. also possible a heater core hose came loose? those are my guess's
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Old 02-28-2013, 08:22 PM   #5
Gmfergione
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Thanks for the help guys, Got a pressure test and it showed it was leaking out of the TB...I havent done the mod, but replaced the hose and all is well - just got back from 200mi snowboard trip and not a single issue.

Solution: get a pressure test done on coolant system; replace coolant lines under the throttle body if coolant is in the areas as posted on pictures.
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