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Old 10-16-2004, 02:15 AM   #1
daWagon
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Member#: 72665
Join Date: Oct 2004
Chapter/Region: South East
Location: Greenville, SC
Vehicle:
2002 wrx wagon
whtie, 6MT, vf22

Unhappy asking for advice - fuel leak in/arround engine!

hi I'm new to nasioc as you can tell. I'm also new to wrx's and being the smart chap that I am, I just bought a stage 4 wrx, which I have a lot to learn about.

I have had the car for about a month and I just noticed a strong fuel smell tonight when I was driving. I didn't notice any power loss, or anything else that was strange, except maybe that the gas guage was going down quicker, but that could also be my mind playing tricks on me. I got out the car and found that the smell seemed to be coming from the front on the passengers side. The first thing I thought to look at was the injectors, but they appeared not to have any leaks arround them. What I found for sure was a small "puddle" of fuel, smack in the middle, on top of the engine block - right under where the TMI used to be.

I relly hope it's just a fule line issue but who knows. I'm basicaly asking for any advice that you all may have. Tomorrow I plan to start checking the fuel line and maybee the injectors.

I was wondering if any of you know where the fuel line runs up arround the engine bay? That info would help alot sine I haven't done any of the mods to the car and it is all new to me. i'm planning on trying to get a service manual tomorrow if I can, that will help too!

I would really appreciate any advice or info that would help me out.

Oh yeah - I have:

walbro fuel pump
blitz 550 injectors
link ECU
vf22 running @18psi

thanks
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Last edited by daWagon; 10-16-2004 at 02:27 AM.
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Old 10-16-2004, 09:01 AM   #2
hotrod
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Member#: 14141
Join Date: Jan 2002
Location: 13.239@102.85 @ 5800 ft on 13T
Vehicle:
2002 Impreza WRX

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There is a known problem and a TSB for cold weather fuel leaks in the OEM fuel lines. They repaired mine under warrantee (its both an emissions and a safety issue so they should repair it no questions asked). It involves pulling the intake manifold and replacing the small rubber hose sections in the fuel lines to the injectors with slightly longer ones.

If you do a search on "cold weather fuel leak" you should be able to find the TSB and all the details.

Mine leaked at the rubber hose section that sits right behind the power steering pump near the fuel pressure regulator.

Larry
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Old 10-16-2004, 09:21 AM   #3
Mulder
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Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 WRX
15 WRX/05 GTO

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Fuel leak info here-
http://forums.nasioc.com/forums/show...hreadid=131755
From your description it does sound like this issue, however it usually doesn't become noticeable until the temperature gets very low, well below freezing. Also your car is modded and particularly the injectors have been changed so it could be related to that.
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Old 10-16-2004, 10:24 AM   #4
cky211
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Join Date: Dec 2002
Chapter/Region: NWIC
Location: Spokane WA
Vehicle:
02 WRX MPB
No TGV + lots of P&P

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I ran into a leak myself installing fuel injectors

I had to go back and lube up the top O ring with WD40 for a proper seal

What a pain

I will never install injectors with dry O rings again


-Scott A.
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Old 10-16-2004, 11:44 AM   #5
SINthetic
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03 WRX
Silver

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If there is a leak, find it asap. You dont want an engine fire. One way to help look for one is turn the car to start but dont crank it over. The fuel lines get pressure and then you can search for the leak.
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Old 10-16-2004, 12:04 PM   #6
BrianH
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is an injector leak more likely to become evident at higher rpms/loads? I'm having a similar problem but I can't find a leak, I'm just getting a smell. It's not happening in the freezing cold either. Usually comes after getting on the throttle pretty hard.
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Old 10-16-2004, 03:23 PM   #7
daWagon
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Join Date: Oct 2004
Chapter/Region: South East
Location: Greenville, SC
Vehicle:
2002 wrx wagon
whtie, 6MT, vf22

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yeah, the weather isn't very cold here yet. yesterday the high was 61 and the low was 47. I have tried to duplicate the problem but have not had any luck yet. I haven't driven the car yet though! i've only been running it at a stand still. I'm going to take it out now - it's about 70 outside so I'll see what happens then.

there do seem to be conflicting symptoms though. The smell seemed to be coming predominantly from the passenger side - suggesting a problem arround the injectors - but I found the pool of fuel right in the middle of the engine which points more towards the loose fuel line issue talked about in this thread:

http://forums.nasioc.com/forums/show...hreadid=138069

Just have to see what happens!
Thanks for all the help so far, those threads are really usefull - I suck at searching!
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Old 10-19-2004, 11:26 AM   #8
daWagon
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Member#: 72665
Join Date: Oct 2004
Chapter/Region: South East
Location: Greenville, SC
Vehicle:
2002 wrx wagon
whtie, 6MT, vf22

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I think I found the source. It did seem to be in the typical cold weather problem place! There was a loose clamp screw that I tightened a bit and haven't run into a leak again. The loose clamp was straight down between the v in the intake manifold like discribed by others. Although the temp hasn't been as cold again!

The car has lived in FL all of it's life up intil now, so it hasn't seen much cold weather. My guess is that the slight temp drop made the loose clamp evident.

Either way I think I'm going to keep a long screw driver in the car along with a fire extinguisher . . . just in case!

thanks again
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