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Old 04-26-2014, 04:56 PM   #1
BooSTIn_wrx
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Default Coolant going into exhaust manifold abd out the exhaust

So I had coolant and white smoke coming out of my exhaust, someone told me it was my turbo leaking coolant. So I bought a new turbo and installed it and now I still have the same problem! Any idea what might be the issue? I had a head gasket job 10000 miles ago?!
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Old 04-26-2014, 11:02 PM   #2
arty202
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Sounds like head gaskets to me. Do a compustion test to be sure.
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Old 04-26-2014, 11:52 PM   #3
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Quote:
Originally Posted by BooSTIn_wrx View Post
So I had coolant and white smoke coming out of my exhaust, someone told me it was my turbo leaking coolant. So I bought a new turbo and installed it and now I still have the same problem! Any idea what might be the issue? I had a head gasket job 10000 miles ago?!
1) Your head gasket job went poorly. Possible the heads needed resurfaced or the block. A crack could have went un-noticed if not magnifluxed. It may have been torqued incorrectly.
2) Your throttlebody or egr cooler could be leaking coolant and passing it through the engine. Unlikely but possible I guess, though I have never seen it personally.
3) Your new turbo is also leaking coolant, Also unlikely.

Just a few idea on where I would go with it.

Pressure test the cooling system. Leave the gauge in place and hook a compression tester hose to a cylinder. Apply 120psi air pressure or so to the cylinder and watch the cooling system psi gauge. It should show up better if warmed up because a crack would expand after warming up. Repeat on all cylinders and leave it pressured up for like 15 minutes while watching for a rise in the cooling system pressure.

Hope your mechanic has a 12month 12k guarantee because you may need it.
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Old 07-02-2014, 10:37 PM   #4
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Thanks for the reply I'll definitely keep you updated after I try these out!!!!
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Old 07-04-2014, 09:12 PM   #5
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d000000000000d.....i just dont know what to say to this one....
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Old 07-05-2014, 03:31 AM   #6
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I have seen the gasket in the throttle body fail and introduce glycol into the manifold, causing the white smoke out the tail pipe. I personally delete the coolant lines to/from the throttle body because it's just another potential leak point and no evidence has been found that shows benefit of the coolant heating/cooling the throttle body.

I'd also agree with the coolant system pressure test and even pulling all your plugs to see if only one or all cylinders are burning coolant.

Report back when you find the issue.
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Old 07-05-2014, 03:34 AM   #7
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Also, those 2002-2003 heads commonly crack and can leak coolant into the cylinder. They may have replaced the perfectly good head gaskets 10k miles ago but failed to find the crack around the spark plug holes in the head/s.
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Old 07-05-2014, 04:09 AM   #8
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Quote:
Originally Posted by kevron View Post
Also, those 2002-2003 heads commonly crack and can leak coolant into the cylinder. They may have replaced the perfectly good head gaskets 10k miles ago but failed to find the crack around the spark plug holes in the head/s.


d0000000000d...the 2.0 heads are prone to cracking around the spark plug holes

but this is in NO WAY causing coolant leaking into anything
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Old 07-05-2014, 10:54 AM   #9
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It has been like 2 months.... Have you been driving it like that or just parked?

I personally would have started killing everyone in the phonebook out of sheer boredom and WRX withdraws not being able to drive my car that long.
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Old 07-05-2014, 11:00 AM   #10
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coolant pressure test...often its the coolant return line off the turbo leaking coolant into the uppipe.
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Old 07-05-2014, 11:44 AM   #11
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Quote:
Originally Posted by Uncle Scotty View Post
d0000000000d...the 2.0 heads are prone to cracking around the spark plug holes but this is in NO WAY causing coolant leaking into anything
It's a pretty common problem actually. Really common on hybrid setups. Coolant passages run through there and when the cracks grow deep enough they WILL leak coolant/combustion. I'm surprised you didn't know that.
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Old 07-05-2014, 02:33 PM   #12
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Ur both right...i can attest to both cases after seeing waaaay too many cracked 2.0 heads. My machinist told me that the reason they crack so easily is as the aluminum heats up and cools off over time the welds expand away from each other and crack...he's got a closet dedicated strictly to cracked heads and wouldn't ya know, half of em are subie heads...
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Old 07-05-2014, 06:11 PM   #13
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Quote:
Originally Posted by kevron View Post
It's a pretty common problem actually. Really common on hybrid setups. Coolant passages run through there and when the cracks grow deep enough they WILL leak coolant/combustion. I'm surprised you didn't know that.

man..if its cracked that bad....

i think you would be pressurizing the cooling system and blowing coolant out and you would KNOW about it

and i guess ive seen some motors that the issues were bad and leaking coolant

they ****canned the whole mess and started over

was easier than mucking about with it
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Old 07-05-2014, 06:13 PM   #14
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^^^+1
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Old 07-05-2014, 06:22 PM   #15
kevron
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Completely agree... I've only seen/heard of the cracks leading to coolant leak a few times. I know pretty much all 2.0 heads have the cracks and they'll run a long time without issue under normal conditions. It's the increased combustion pressures from going hybrid/increasing boost that'll do them in. Reason I'm not a fan of the hybrid set ups... Anyways, repost when you find the issue.
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