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Old 12-25-2008, 12:53 AM   #1
skirex
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Default 05 wrx fuel leak in cold weather?

so yesterday i started my car up after work (very cold out) turned the defroster on and smelled gas (already had the car through a cold winter last season and this is the first instance of this problem). it only smelled like gas when it was standing still, not when i actually started driving it down the road. did it again today while it was very cold, again smelled like gas while it was idling but not once i got going. did a quick search and found that bugeyes had a common problem with fuel leaks in cold weather. does this problem extend to 05's? dont really have the time to do a lot of research right now and i need to do some long distance driving tomorrow. with the problem seeming to fix itself once the engine gets up to temp am i risking anything by driving it? it seems from my limited research that subaru is aware of this problem, will i be able to call up my local dealership after the holidays and get this fixed under warranty (car has 40k on it)
thanks in advance
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Old 12-25-2008, 12:54 AM   #2
Dirty25RS
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I am having the same issue on my 04 WRX. haven't posted about it or anything yet. This is its second winter under my ownership and i didnt' notice it last winter.

oh btw, if you have any after market parts installed it might help to list them to make a diagnosis a little more accurate

me, tanabe catback
blitz atmospheric bov (stupid i know, previous owner crap)
some stupid turbo timer.
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Old 12-25-2008, 01:00 AM   #3
skirex
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sry for not mentioning in the first post, current mods are borla headers, crucial up/down and protune.
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Old 12-25-2008, 02:09 AM   #4
pDubs
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Have you read this? http://forums.nasioc.com/forums/show....php?t=1421635

Obviously it is for bugeyes but who knows could be related.
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Old 12-25-2008, 08:31 AM   #5
nicholam
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Find a warm carwash and tighten all the fuel line clamps. Start at the fuel filter and check all of them along your manifold. I have this problem every year when it gets below -30C (-31F). The hoses actually loose some of their elasticity when it's that cold and leaks can happen. It's much worse if you're running an aftermarket fuel pump at higher base pressures. I'll be getting fuel rails in the spring to once and for all fix the problem.
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Old 12-25-2008, 02:36 PM   #6
wobbz81
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I had the same problem in cold weather(below 30F) with my 02 wrx. Im not sure the most common cause, but for me it was the O-rings on the fuel injectors. When I upgraded STI pink injectors with newer O-rings the problem went away.
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Old 12-26-2008, 12:10 PM   #7
dru_hill
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Quote:
Originally Posted by wobbz81 View Post
I had the same problem in cold weather(below 30F) with my 02 wrx. Im not sure the most common cause, but for me it was the O-rings on the fuel injectors. When I upgraded STI pink injectors with newer O-rings the problem went away.
I just started getting this in my 04 WRX, only when it is super cold out, like below 10degF. I think it is the injector O rings as well, I have a small boost leak from my injector O rings that showed up under a pressure test. It was a tiny leak so my tuner and I decided it was more trouble than it's worth to fix, but I think the little bit of fuel that pisses out when its cold smells. It goes away in about 5 minutes as soon as a little heat gets into the motor.
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Old 12-26-2008, 03:02 PM   #8
Effex Unlimited
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hmmmm...... i hope i don't start having these issues.
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Old 12-26-2008, 04:02 PM   #9
MattK1
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I have a 2004 WRX that I have owned since new & the temp went down to 8 degrees last weekend. This is when my fuel leak started. I have checked the leak everyday when I start the engine in the morning(I can see that it pools in the exact spot where the 02's do). The colder the weather the more it leaks. It is virtually gone when the start up temp is at 36 degrees & it goes away when at operating temp. My fuel smell inside is also only when at idle & stopped. I am going to pull the intake manifold & replace the rubber lines & all clamps(also will take a look at everything else). While I'm in there I also ordered: Silicone turbo inlet, Intercooler hose kit, MAF hose.

2004 WRX M/T
Cobb stage 2
Helix non-Cat DP
SPT Cat-Back
Cobb SF Intake with Cold Air Box
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Old 12-28-2008, 01:51 AM   #10
skirex
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so its still doing it, except i only get the smell when i turn the defroster on? if i pop the hood i can smell it in the engine bay but cant locate the source of the leak/smell.
i realize my next question is subjective, but with this being a known problem am i going to get any problems from the dealership because of my mods? do they make any notes on the car/vin so if i were to go to another dealer for possible future warranty repairs it would be forever known that i had these modifications done to the car?
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Old 12-28-2008, 11:53 AM   #11
emerica459
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Quote:
Originally Posted by MattK1 View Post
I have a 2004 WRX that I have owned since new & the temp went down to 8 degrees last weekend. This is when my fuel leak started. I have checked the leak everyday when I start the engine in the morning(I can see that it pools in the exact spot where the 02's do). The colder the weather the more it leaks. It is virtually gone when the start up temp is at 36 degrees & it goes away when at operating temp. My fuel smell inside is also only when at idle & stopped. I am going to pull the intake manifold & replace the rubber lines & all clamps(also will take a look at everything else). While I'm in there I also ordered: Silicone turbo inlet, Intercooler hose kit, MAF hose.

2004 WRX M/T
Cobb stage 2
Helix non-Cat DP
SPT Cat-Back
Cobb SF Intake with Cold Air Box

I did just that on my 04, make sure you replace all the rubber lines, not just the 2 on the passenger side. There is 1 on the driver side that will also leak if not addressed. I have had no issues since i replaced these lines.
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Old 12-28-2008, 11:58 PM   #12
rallymarty
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I am noticing the same problems with my early production 02.

I didn't notice this until the winter after I installed my aftermarket uppipe and exhaust. Maybe some residual heat from the factory pieces helped to keep the area slightly warmer?

Would replacement of the factory rubber lines with some longer pieces and better clamps be the cheapest easiest repair? The quality of the OEM rubber truly seems to be the issue imho.

Those that have just used some parts store clamps, how is it holding up in the cold weather? Did it fix the problem?
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Old 01-02-2009, 05:17 PM   #13
Turbovan
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'05 wrx, and I have the same problem in the winter except I live in Phoenix where it really doesn't get too cold. Horrible gas odor on startup, but it goes away completly after a couple minutes. The issue is worse after a walbro install, but the odor and leak still stop after the car warms up.
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Old 01-02-2009, 06:01 PM   #14
Hypnotk
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Is it possible to get to the injectors on the passenger side without taking the manifold off to check the o rings?
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Old 01-05-2009, 02:21 AM   #15
skirex
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so it was well below zero last night and today, the smell of gas was very strong (also, it seems that the smell only gets inside the cabin if the defroster is on, not so much if its just the heater?). anyway, popped the hood and looked everywhere i could think for the leak/leaks and couldnt find it. can someone point me in the right direction?
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Old 01-05-2009, 02:28 AM   #16
screechf50
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Lightbulb I'll be as descriptive as I can...

I'm having the same cold weather problem with my 04 WRX that obviously most of us are having. I'm an ASE certified mechanic for Firestone and after a couple of trials, I have good news and bad... The good is that I found the leak(s). There are two short pieces of rubber fuel hose that connect the metal lines that leak in cold weather. The bad news is their location. One is located under the intake manifold behind the A/C compressor. The other, and more common, is located under the turbo inlet tube on the passenger side of the engine. Subaru has acknowledged this problem with the early 02 models but DOES NOT cover it under warranty or recall (WTF?). The simplest way to resolve these leaks is to tighten the hose clamps (duh, you say). That's the problem. If your WRX is like mine, all of the hose clamps are flipped the other way and/or inaccesable for screwdrivers. The ONLY way to resolve this (especially the rear clamp for the passenger side) is to pull the intake manifold, which I don't reccommend if you're not sure what you are doing. There are many nuts and bolts to keep track of and gaskets that SHOULD be replaced. I replaced the hoses and clamps and put a dab of thread locker on the clamps for good measure. Total cost was right around $50 and 3 hours of my time. Good luck!!

Last edited by screechf50; 12-01-2013 at 09:21 PM.
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Old 01-05-2009, 05:37 PM   #17
WReXsy
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WOW, did not know this was such a big issue. I noticed this myself, first season. '02, my local mechanic is working on the car right now. Said leak is from fuel injectors, requiring removed of intake. Parts costs like $40 but labor is going to be $200. FRAK

Difference from all of you is that it's leaking constantly, didn't notice until this cold season (Cali), but after talking with 25 year experienced/cert mechanic uncle he recommended not driving around on it cuz it could potentially catch on fire.

Goodluck everyone, Happy new year
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Old 01-08-2009, 04:23 PM   #18
nluvwithxlr8ingWRX
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Anybody know the part # for the injector rings? Or possibly the size? I am having the same issue and I am 95% sure its from the injectors, therefore the o rings. Thanks!
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Old 01-29-2014, 11:25 AM   #19
jliberatore92
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Quote:
Originally Posted by nluvwithxlr8ingWRX View Post
Anybody know the part # for the injector rings? Or possibly the size? I am having the same issue and I am 95% sure its from the injectors, therefore the o rings. Thanks!
+1 I would like to know as well.
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Old 01-29-2014, 11:55 AM   #20
danger1138
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Im not sure on the part number, but i desperately needed those o rings for the injectors to get car back on the road, and the dealer charged me a whopping $12 for each. If there top feed injectors u really only need the top o rings that connect injector to fuel rail.

If u search some, theres a site that sells a whole pack of them for just a fraction of the cost of what youd pay at the dealer for one. Oh and btw, dont just toss in any generic o-ring youd get at autozone, they have to be fuel resistant like'viton'.
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Old 02-11-2014, 11:58 PM   #21
20swrt
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Quote:
Originally Posted by skirex View Post
so yesterday i started my car up after work (very cold out) turned the defroster on and smelled gas (already had the car through a cold winter last season and this is the first instance of this problem). it only smelled like gas when it was standing still, not when i actually started driving it down the road. did it again today while it was very cold, again smelled like gas while it was idling but not once i got going. did a quick search and found that bugeyes had a common problem with fuel leaks in cold weather. does this problem extend to 05's? dont really have the time to do a lot of research right now and i need to do some long distance driving tomorrow. with the problem seeming to fix itself once the engine gets up to temp am i risking anything by driving it? it seems from my limited research that subaru is aware of this problem, will i be able to call up my local dealership after the holidays and get this fixed under warranty (car has 40k on it)
thanks in advance
Here is a link to another thread with a video I posted.

http://forums.nasioc.com/forums/show....php?t=2599552
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Old 02-12-2014, 03:18 AM   #22
Nikryj
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I know this is an old thread, but it's not always injector O ring related. I just installed new injectors and they are leak free. I still smell it sub freezing temperatures. IIRC I read that the little rubber lines on the fuel rail sometimes shrink and seep a little. I for one noticed some seeping on top of my fuel filter, just tightened the clamps and it seems to be good to go.
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Old 02-12-2014, 07:21 AM   #23
Brother EddieJ.
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This thread is 4-5 years old fellas. Start a new thread or check the recall section. This is a common issue and there is a recall from SOA
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Old 02-14-2014, 11:54 AM   #24
mdean12
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I tried getting them to perform an official recall on my 04 with no luck.
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