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Unread 06-15-2009, 11:47 PM   #1
darinr
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WJ leaking fuel from injector rail

Just wondering if anyone could help me figure out what to call this part, it's leaking fuel off the fuel injector rail. I wasn't able to find it in the service manual and the dealer had no idea what I was talking about, but was more than eager to sell me a new rail . I can twist it and it seems to be loose like it once was pressure fitted. Any insight is much appreciated.

thanks,
-darinr



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Unread 06-15-2009, 11:51 PM   #2
MEinSoCal
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no click....

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Unread 06-15-2009, 11:57 PM   #3
QuadraTokn
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Too small of a picture to see whats going on.

The fuel line IS pressure fitted to the rail.

You're supposed to be able to just push it on with your hand, and since I assume you've tried that, maybe you need a new line or something.

If it turns out you need a rail or something I have used WJ parts for sale.
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Unread 06-15-2009, 11:59 PM   #4
Kruzin
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New o-rings on the injector(s).
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Unread 06-16-2009, 12:05 AM   #5
Bojeepus
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can't realy tell from the picture but isnt that the fuel presure regulator
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Unread 06-16-2009, 12:12 AM   #6
MEinSoCal
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Quote:
Originally Posted by Kruzin View Post
New o-rings on the injector(s).
can o-rings be bought from auto parts stores separately?
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Unread 06-16-2009, 12:19 AM   #7
darinr
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I'm new to the forum and still trying to figure out how to embed images but in the meantime here are a couple different angles.

http://lh3.ggpht.com/_7BjSzK0MuWY/Sj...s800/IMG_3.jpg

http://lh6.ggpht.com/_7BjSzK0MuWY/Sj...s800/IMG_2.jpg

It's not one of the injectors, may be a regulator or pressure valve of some sort.
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Unread 06-16-2009, 12:23 AM   #8
xJoshxx
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Quote:
Originally Posted by darinr View Post
I'm new to the forum and still trying to figure out how to embed images but in the meantime here are a couple different angles.

http://lh3.ggpht.com/_7BjSzK0MuWY/Sj...s800/IMG_3.jpg

http://lh6.ggpht.com/_7BjSzK0MuWY/Sj...s800/IMG_2.jpg

It's not one of the injectors, may be a regulator or pressure valve of some sort.
you think you can get closer? so far all your pictures have been far away hard to see anything. and your a new user u dont have 50 tech post's yet.

ALSO make your pictures with the [img ] [/ img] tags so we can no clicky them
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Unread 06-16-2009, 07:28 AM   #9
Marcos
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The pressure regulator is in the pump assembly int he tank. That's probably a fuel pressure dampener. It looks like it should be a separate piece, but I didn't see it listed separately on the parts websites, so it may only be available as part of a fuel rail assembly.
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Unread 06-16-2009, 11:06 AM   #10
darinr
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Thanks a bunch everyone for all your input! Turns out it is the fuel pressure damper, #8 on diagram below.

Darin

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Unread 11-17-2009, 01:29 PM   #11
WJJIM02
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WJ Fuel Rail Damper Leak

What was the fix for this problem? My 02 WJ 4.0 seems to be developing the same leak at 90K.
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Unread 11-19-2009, 07:34 PM   #12
quikturbo
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Quote:
Originally Posted by WJJIM02 View Post
What was the fix for this problem? My 02 WJ 4.0 seems to be developing the same leak at 90K.
Same here I started smelling fuel while outside vents were on. Thought it was the injector o-rings as I felt some fuel by the number 4 inj, so I replaced all of the o-rings. Turns out it was trickling down to the #4 injector from the fuel pulse dampener in the above.

Nobody shows this as a part, so is it safe to assume it's sold along with a new rail assembly? It looks to have metal tabs holding it on a ridge, I've thought about trying to pop it off and see if I could replace an o-ring there.

Like WJJIM02, any suggestions on fixes?
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Unread 11-19-2009, 08:28 PM   #13
Kramer H
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looks like some kind of pressure relief valve maybe? where are you located? in washington? what part, if i see it in person i could probably (maybe) figure it out?

oops, i should probably read the thread first. dangit.
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Unread 05-01-2010, 06:24 AM   #14
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Has anyone ever figured out how to fix this my daughters 02 is leaking in the same spot.
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Unread 05-01-2010, 07:35 AM   #15
quikturbo
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I ended up just buying a new fuel rail and that regulator is mounted already. After i took the old one off I inspected and while you may be able replace the o-rings under the top cap I wasn't confident it would seal up again. The rail was just under 200 if I recall.
Good luck.
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