unidentifiedbomb

So I just upgraded my injectors to Ford 19s and after I stopped any leaks coming from them I now have an issue with a fuel rail line. I have an 1988 Laredo two door xj 4.0 I6. The line that is leaking now is the one directly in the front of the rail by the belt. I believe I have read it was the supply line or the pressure regulator, I'm not sure which one it is. I would like to know what O rings I need to get to fix it. When I took it out at first there was a worn o ring and some older bits of o rings that weren't cleaned out last time someone whoever put the new one on. In the picture that I found online you can see what I'm talking about at the end of the fuel rail with the two outputs going out of it. It's leaking from the metal hose side (right side). I need to fix this leak asap as i am at college and would appreciate any help I can get

freegdr

you put o rings back in there correct ?

unidentifiedbomb

there was one blue worn o ring and a black harder rubber or plastic ring in there. I put it back in both ways plastic first and rubber or rubber first then plastic and it leaked both times

freegdr

mine take two orings not one ?

freegdr

look here pg 14-11......http://www.jeep4x4center.com/knowledge-base/index.htm

F1Addict

The o-rings should be Viton as conventional butyl rubber will degrade in the presence of gasoline. Most auto parts stores carry the assortment pack sold under the "HELP!" brand. You'll need two of the assortment packs to have enough (2 on each on supply (front of engine) and return (near firewall)). There should be a 3/8th inch fuel line clip (5/16ths on the return), a Viton o-ring, a small nylon spacer, and another Viton o-ring. Make sure you lubricate the line and o-rings with petroleum jelly before inserting so you don't pinch and potentially damage the soft bits.

There is an all-in-one clip with integral seals that I've seen posted by Cruiser and Flintstone, I think.

Just looked it up, factory part numbers for the seal kits.

I believe this link is for the supply line (3/8ths)

...and this link is for the return line (5/16ths)

cruiser54

Factory part number is 83502745.

unidentifiedbomb

Well the back isn't leaking and I couldn't even remove it when I tried so unless it leaks some day I'm not even going to touch it. But with the front I'm missing an o ring? It should go o ring spacer o ring? Ok so I'll go and buy the necessary two o rings for the front then

unidentifiedbomb

Well I just want to replace the o rings not the whole thing as the spacer and clip are still in good condition

cruiser54

o-ring, spacer, o-ring

unidentifiedbomb

But what size do I need for the o rings?

cruiser54

Either 730-5017 or 730-5018 Napa 0-rings.

unidentifiedbomb

So the 5018 part number is for the 3/8ths o ring. From what F1Addict said, I need the 3/8ths o ring as I am replacing them for the front supply line. Is this correct?

cruiser54

I can't remember. Get both and use what works.

unidentifiedbomb

Ok, I'll call them up tomorrow there's a napa parts store just 10 minutes from my college. Thanks! Just another question. It might sound stupid but in the process of the swap I somehow lost where the vacuum line off the regulator goes. I have the first couple inches that goes to the regulator itself but it's slipped off wherever the other hose line connects to it and I can't find where the other hose is.