Welcome to the North American Subaru Impreza Owners Club Tuesday September 1, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo)

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 06-16-2013, 08:08 PM   #1
GrannyShifta
Scooby Newbie
 
Member#: 359647
Join Date: Jun 2013
Location: Louisville, KY
Vehicle:
2003 Bugeye
PSM

Default 2002 WRX coolant on top of block

I have a 2002 WRX with 206 thousand miles, on the body that recently got new heads 6k miles ago.

Within the last two weeks I noticed a small bit of steam when I would pull up to stoplights, I searched and checked the common spots, turbo oil lines, torn CV boot, PS lines, those sorts of things. I held my glasses over it and determined it was coolant and not oil(condensation on the lenses), so knowing that valve cover seals were out of the picture I thought id get a better look at the turbo lines when I had the oil drained at the next change. But within the last few days its massive amounts of smoke and the coolant system is loosing about 8oz of coolant on my morning commute, and has heavy steam when I park. Ive also noticed a "pssh" sound like a blow off valve hit, but it happens completely randomly while driving.

Today I took everything apart to find that there was a bunch of bright green coolant on top of the passenger head, mostly concentrated around where the coolant crossover connects to the engine. I'm talking puddles, with green crust around the edges. On the same place on the drivers side there is a slight residue but no standing coolant.

Anything I'm missing? It seems to be screaming that its the coolant crossover pipe, but it concerns me that
a) both sides started leaking at roughly the same time
b) theres no green/white crust on the crossover pipe/engine mating surface

Any other rubber hoses running under the intake manifold that come to mind?

I have pictures to post if anyone thinks that'd be beneficial.
* Registered users of the site do not see these ads.
GrannyShifta is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 06-17-2013, 10:05 AM   #2
DannyLerch
Scooby Newbie
 
Member#: 353235
Join Date: Apr 2013
Location: Atlanta, GA
Vehicle:
2002 WRX
World Rally Blue

Default

Quote:
Originally Posted by GrannyShifta View Post
I have a 2002 WRX with 206 thousand miles, on the body that recently got new heads 6k miles ago.

Within the last two weeks I noticed a small bit of steam when I would pull up to stoplights, I searched and checked the common spots, turbo oil lines, torn CV boot, PS lines, those sorts of things. I held my glasses over it and determined it was coolant and not oil(condensation on the lenses), so knowing that valve cover seals were out of the picture I thought id get a better look at the turbo lines when I had the oil drained at the next change. But within the last few days its massive amounts of smoke and the coolant system is loosing about 8oz of coolant on my morning commute, and has heavy steam when I park. Ive also noticed a "pssh" sound like a blow off valve hit, but it happens completely randomly while driving.

Today I took everything apart to find that there was a bunch of bright green coolant on top of the passenger head, mostly concentrated around where the coolant crossover connects to the engine. I'm talking puddles, with green crust around the edges. On the same place on the drivers side there is a slight residue but no standing coolant.

Anything I'm missing? It seems to be screaming that its the coolant crossover pipe, but it concerns me that
a) both sides started leaking at roughly the same time
b) theres no green/white crust on the crossover pipe/engine mating surface

Any other rubber hoses running under the intake manifold that come to mind?

I have pictures to post if anyone thinks that'd be beneficial.
Could be the head gasket. Most rebuilds are under warranty for like 15-30k mikes aren't they?
DannyLerch is online now   Reply With Quote
Old 06-17-2013, 10:55 AM   #3
kellygnsd
Scooby Guru
 
Member#: 32669
Join Date: Feb 2003
Chapter/Region: SCIC
Location: San Pedro
Vehicle:
2007 2.34LR, EFR7670
LINK G4 hybrid STi

Default

Where are the grean crusties building up?
kellygnsd is offline   Reply With Quote
Old 06-18-2013, 05:06 PM   #4
GrannyShifta
Scooby Newbie
 
Member#: 359647
Join Date: Jun 2013
Location: Louisville, KY
Vehicle:
2003 Bugeye
PSM

Default

I dont think its the head gasket, because the coolant it just pooled there, and its not really where the block meets the head. I think it the HG were bad it would fly out of there with some force wouldn't it? not to mention i would thing itd be hot enough it wouldn't stick around for too long.

and the green crusts are building up at the edges of the puddles, and also at the coolant crossover pipe-engine mating surface.

Ive talked around and everyone is stressing the importance of coolant conditioner...so i picked up some holtz rad-weld, because I feel like previous owner wasn't the type of guy to do things by the subaru book
GrannyShifta is offline   Reply With Quote
Old 06-18-2013, 05:06 PM   #5
GrannyShifta
Scooby Newbie
 
Member#: 359647
Join Date: Jun 2013
Location: Louisville, KY
Vehicle:
2003 Bugeye
PSM

Default

Its also worth mentioning that the car doesn't overheat
GrannyShifta is offline   Reply With Quote
Old 06-18-2013, 05:11 PM   #6
Gamble_WRX
Scooby Specialist
 
Member#: 234783
Join Date: Jan 2010
Chapter/Region: Tri-State
Location: Pennsylvania
Vehicle:
2004 STi
Aspen White

Default

If you have a stock radiator, check the plastic caps. when i had the same issue, the coolant was spraying from a small gap between the radiator cap and the rad, all over the engine. i noticed it on the heads as well, because it wasnt spraying at idle. i did a test and thats where it sprayed from. just a thought. if that is the issue, get a CX Racing Rad, theyre under 150$ on ebay, and they're awesome quality. plus you never have to worry about the caps separating again.
Gamble_WRX is offline   Reply With Quote
Old 06-18-2013, 05:13 PM   #7
art@grimmspeed
NASIOC Vendor
 
Member#: 301037
Join Date: Nov 2011
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
2004 Forester XT
Aspen White

Default

Check the coolant lines running off the coolant reservoir. If one is dripping it will cause a puddle. I would go to a local auto parts store and rent a coolant tester. This will allow you to pressurize the system and check for leaks without the car being running or blazing hot!
art@grimmspeed is offline   Reply With Quote
Old 06-18-2013, 05:38 PM   #8
GrannyShifta
Scooby Newbie
 
Member#: 359647
Join Date: Jun 2013
Location: Louisville, KY
Vehicle:
2003 Bugeye
PSM

Default

Love all the advice.
It could be the cap, but I was also thinking it could be the seam between the plastic and metal portions of the radiator. I'm just confused on how that would pool on the head but not have any residue on the timing cover or intake manifold. Crazier things have happened I'm sure
Ive also gone over most every line in there, but I'll rent that pressure tester and see if any splits open up under pressure.
GrannyShifta is offline   Reply With Quote
Old 06-18-2013, 05:41 PM   #9
Gamble_WRX
Scooby Specialist
 
Member#: 234783
Join Date: Jan 2010
Chapter/Region: Tri-State
Location: Pennsylvania
Vehicle:
2004 STi
Aspen White

Default

^+1 for the pressure tester, its your best bet at finding a leak. i ussually clean everything off, use UV dye and Pressure test it with a blacklight to see if its seeping. not all leaks will jump out at you. also a good chance its the cap.
Gamble_WRX is offline   Reply With Quote
Old 06-18-2013, 05:50 PM   #10
mexicanzero
Scooby Newbie
 
Member#: 167820
Join Date: Dec 2007
Chapter/Region: E. Canada
Location: Ottawa Ontario Canada
Vehicle:
2003 WRX wagon
ej207 + 6 speed

Default

My bet is the crossover pipe o rings, they go often enough.
There are a couple hoses coming off the coolant reservoir and I think another one that run under the intake that can drip around there but either way intake manifold has to come off...
mexicanzero is offline   Reply With Quote
Old 06-18-2013, 05:52 PM   #11
GrannyShifta
Scooby Newbie
 
Member#: 359647
Join Date: Jun 2013
Location: Louisville, KY
Vehicle:
2003 Bugeye
PSM

Default

I'm sure this one will jump out at me. The car steams steadily out of the front grill, scoop, and passenger fender. Less steam when the coolant system is less full
GrannyShifta is offline   Reply With Quote
Old 06-18-2013, 05:57 PM   #12
Gamble_WRX
Scooby Specialist
 
Member#: 234783
Join Date: Jan 2010
Chapter/Region: Tri-State
Location: Pennsylvania
Vehicle:
2004 STi
Aspen White

Default

because of the amount of steam, id bet my bottom dollar on Rad end caps. also because i was just talking to my brother, his wifes fozzy was doing the same thing last week. ended up being the rad.
Gamble_WRX is offline   Reply With Quote
Old 06-18-2013, 05:59 PM   #13
GrannyShifta
Scooby Newbie
 
Member#: 359647
Join Date: Jun 2013
Location: Louisville, KY
Vehicle:
2003 Bugeye
PSM

Default

I will definitely post the fix and mods can change title when that happens hopefully.
GrannyShifta is offline   Reply With Quote
Old 06-18-2013, 07:57 PM   #14
DannyLerch
Scooby Newbie
 
Member#: 353235
Join Date: Apr 2013
Location: Atlanta, GA
Vehicle:
2002 WRX
World Rally Blue

Default

I have an 02 Wrx and my OEM rad split on the top seam where the black plastic meets the aluminum. It sprayed all over the motor but my car never over heated. Swapped the rad and it stopped. Get a mishimoto or something all aluminum. It'll be more efficient and some have a lifetime warranty.
DannyLerch is online now   Reply With Quote
Old 06-18-2013, 08:30 PM   #15
GrannyShifta
Scooby Newbie
 
Member#: 359647
Join Date: Jun 2013
Location: Louisville, KY
Vehicle:
2003 Bugeye
PSM

Default

I washed all the coolant off of the engine and bought a pressure tester. I'll hook it up to both the radiator cap and the turbo reservoir cap and look for the green. thanks again all, I'll post back with what I find
GrannyShifta is offline   Reply With Quote
Old 06-18-2013, 11:45 PM   #16
wrx1392
Scooby Newbie
 
Member#: 342331
Join Date: Jan 2013
Location: tehachapi Ca.
Vehicle:
2003 wrx
blue

Default

im betting on the coolant crossover pipe "o"-rings
wrx1392 is offline   Reply With Quote
Old 06-19-2013, 09:27 AM   #17
GrannyShifta
Scooby Newbie
 
Member#: 359647
Join Date: Jun 2013
Location: Louisville, KY
Vehicle:
2003 Bugeye
PSM

Default

Moral of the story is just because coolant pools one place doesn't mean it leaked there...or even on that side of the engine bay. I pressure tested with the TMIC on and couldn't find anything so I took it off and did it again.

Turns out, there was a split on one of the throttle body warming hoses that would only show up at above 10-12psi. Coolant would run down that hose, onto the throttle body, dribble down onto the coolant crossover pipe, about 5% would go to the passenger side and the rest to the driver side where it would puddle where the crossover tube met the block....new hose and worm clamps should fix it. I'll know for sure in a few days I guess

thanks again guys! pressure tester made the difference!

Last edited by GrannyShifta; 06-19-2013 at 12:09 PM.
GrannyShifta is offline   Reply With Quote
Old 06-19-2013, 11:04 AM   #18
Gamble_WRX
Scooby Specialist
 
Member#: 234783
Join Date: Jan 2010
Chapter/Region: Tri-State
Location: Pennsylvania
Vehicle:
2004 STi
Aspen White

Default

no problem man, glad you found the leak!
Gamble_WRX is offline   Reply With Quote
Old 01-23-2015, 05:18 PM   #19
08OBS
Scooby Specialist
 
Member#: 274397
Join Date: Feb 2011
Chapter/Region: Tri-State
Location: NNJ
Vehicle:
2005 WRX
V7 6spd, vf37

Default

Well i'm going to bump this up. Driving home today something didn't smell right. I got home and there was coolant underneath the car and it was pooling on top of the block under the inlet. After some peaking around it seems to be the hose on the back of the throttle body. The oem clamp looks like it's time to go. I'm going to get a worm clamp and hope that fixes the problem.

There was a small tear in the hose. Cut that piece off and put a new clamp on and good as new.

Last edited by 08OBS; 01-24-2015 at 11:19 AM.
08OBS is offline   Reply With Quote
Old 01-31-2015, 02:51 PM   #20
Jackstand Johnny
Scooby Newbie
 
Member#: 408354
Join Date: Dec 2014
Default

This is crazy. Im having the EXACT same problem. How easy was it to tell that it was just that rubber hose that was split? I literally have the exact problems. My 2002 WRX only leaks coolant on the ground when I give it steady throttle(driving or sitting parked at around 2500 RPMs) and I also have a pool of coolant under the inlet pipe and intake manifold. I really hope my problem is as easy to remedy as yours. GOD I dont wanna have to pull the intake manifold or buy a new crossover pipe and deal with all of that.
Jackstand Johnny is offline   Reply With Quote
Old 01-31-2015, 08:23 PM   #21
998Pilot
Scooby Newbie
 
Member#: 405704
Join Date: Nov 2014
Vehicle:
2002 WRX
Silver

Default

If it's not nice and simple as the TB hoses, the coolant line that runs over the top of the engine would be the first place I look. Check that the rubber hoses are not split and leaking. They are sort of fun to get to (sarcastically), but if you move some other items like the AC compressor and maybe the intercooler, it might make it less of a challenge. I finally did the fuel line recall on my 02 and changed all those hoses while I had the manifold removed.

I still smell antifreeze but can't see it anywhere. 'Course, I've smelt antifreeze every since I put that crappy Mishimoto radiator in.

Hope it helps. I wish there were an easier way to get to all those little water lines, but for sure the rubber items would be the first thing I checked.
998Pilot is offline   Reply With Quote
Old 02-03-2015, 12:50 AM   #22
Jackstand Johnny
Scooby Newbie
 
Member#: 408354
Join Date: Dec 2014
Default

Thanks buddy. I just don't have the time, money or energyu to tackle something like pulling the intake manifold in my gravel driveway right now. I JUST got fi ished doing my radiator and literally just replaced my alternator a few days before I found out about Tue first coolant leak at Tue rad. Its ridiculous. I'm gonna check all the rubber lines tomorrow.
Jackstand Johnny is offline   Reply With Quote
Old 02-03-2015, 08:44 AM   #23
998Pilot
Scooby Newbie
 
Member#: 405704
Join Date: Nov 2014
Vehicle:
2002 WRX
Silver

Default

You shouldn't have to pull the manifold to get to the hoses on that line. I only did mine because I was in the middle of the manifold job anyway.

One of them comes up between the manifold and into the coolant filler tank. The other rubber connecting hose runs just underneath the A/C compressor (If I remember correctly). I forget the size of the hose, but i can get it if you need.

I believe those two hoses and the throttle body hoses are the only ones that are directly above the engine.

Good luck
998Pilot is offline   Reply With Quote
Old 02-15-2015, 06:05 PM   #24
ninteh
Scooby Newbie
 
Member#: 413622
Join Date: Feb 2015
Default

Hi all, found this thread via google. I had the same problem on my 2002 wrx, coolant on top of block under throttle etc. Turned out to be top radiator hose where it meets the block, if it leaks there, it goes all over top of engine. May help someone!
ninteh is offline   Reply With Quote
Old 07-18-2015, 05:14 PM   #25
Delux2769
Scooby Newbie
 
Member#: 408987
Join Date: Dec 2014
Default

Howdy,

Similar issues for me as were said above. I was driving slow, heard a noise... pulled into a parking spot at a store. Had a trail of radiator fluid behind me. Couldn't find the source of the leak to save my life. Had my insurance tow me home for free (God I love USAA). Got home, saw green fluid on top of the engine. Noticed the night before 80% of the fluid was coming from Driver's side of engine bay and barely any on Passenger Side.

I started taking stuff off this morning, took off intercooler, and various lines... Then I noticed one hose was bulged and split. The split was aiming to the driver's side and right near where the pooling was under the throttle body. Did some searching and the line that split was the "Throttle Coolant Out Line". All my lines need to be replaced as I am sure they are all original and have 215k miles on them... Ordering some new lines and hopefully that fixes my problem!!!

Will post up if this solves my problem.
Delux2769 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 01:38 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2015, North American Subaru Impreza Owners Club, Inc.