Busted fuel line fitting...and a sweet fix

DieselSJ · Jan 1, 2011

So Thursday during some basic maintenance I found the source of a small fuel leak. I thought I needed the o-rings for the fitting, but it turns out the fitting was cracked. A little pressure while I was checking it and it broke. I guess better in the garage than on the highway.

Dealer wanted $65 for the new line and couldn't get one until next week. I needed a faster solution so I called Summit and ordered up some fittings which arrived Friday morning.

Some AN to snap-lock adapters - 3/8 for the feed and 5/16 for the return...

Some hard-line to AN adapters...

I used push-lock line and fittings to make the lines. And I don't have to worry about the stock plastic fittings breaking any more. I used the standard blue/red fittings on the pressure side and black fittings on the return side.

Part numbers -

EAR-165056ERL tube adapters (2)
RUS-640850 Fuel rail fitting 5/16" black
RUS-640863 Fuel rail fitting 3/8" blue
SUM-220701 Twist-tite -6 straight fitting (2)
SUM-220701 Twist-tite -6 straight fitting black (2)
SUM-220783 -6 Twist-tite hose

Total cost of the parts was about $95, which was cheaper than replacing both of the lines.

jcnoble · Jan 1, 2011

Nice, I need to replace my lines but i don't think those fittings will work on a 1988 XJ.

joe_peters · Jan 2, 2011

jcnoble said:
Nice, I need to replace my lines but i don't think those fittings will work on a 1988 XJ.

You could convert to the later 95 fuel rail and change pressure regulators, Renix fuel rails are getting hard to find.

jcnoble · Jan 2, 2011

Would that require new fuel injectors? Or would the old ones work?

joe_peters · Jan 2, 2011

Hopefully you are not running the "fire starter" OEM injectors still: http://www.jpmagazine.com/techarticles/engine/154_0811_preventing_jeep_engine_fires/index.html

Check out Rainman's chart in this thread: http://www.naxja.org/forum/showthread.php?t=1027854

So, have you already upgraded your injectors?

jcnoble · Jan 2, 2011

I replaced the stock injectors several years ago when I discovered they were leaking. The replacements were standard replacements from an autoparts store. No problems since. I don't remember what brand they are.

Alex E · Jan 2, 2011

joe_peters said:
You could convert to the later 95 fuel rail and change pressure regulators, Renix fuel rails are getting hard to find.

Other then availability is there any benefit to 95 and newer fuel rails?

joe_peters · Jan 2, 2011

Well, they help the Ford 19 lb injectors work better due to their CCs being slightly less than OEM, you don't want the duty cycle of the injectors to get too high or they go static--constantly open. Myself and a lot of others haven't done this conversion--yet. It is on my "Jeep-Do" list for another time.

cruiser54 · Jan 2, 2011

joe_peters said:
Hopefully you are not running the "fire starter" OEM injectors still: http://www.jpmagazine.com/techarticles/engine/154_0811_preventing_jeep_engine_fires/index.html

Check out Rainman's chart in this thread: http://www.naxja.org/forum/showthread.php?t=1027854

So, have you already upgraded your injectors?

"fire starter" injectors. Too true and very funny name for them. :thumbup:

DieselSJ · Jan 2, 2011

jcnoble said:
Nice, I need to replace my lines but i don't think those fittings will work on a 1988 XJ.

They should - they are the same style push-lock.

jcnoble · Jan 2, 2011

Looks like you also have thread on type steel lines from the fuel tank, mine are pressed onto the rubber hose which goes to a quick connect metal fitting to the fuel rail.. I would have to run new lines from the tank?? Or can I cut the steel line and put on a screw type fitting (AN?) Nothing is standard on the 88xj fuel lines.

XJRunner · Jan 2, 2011

I run these injectors
http://www.precisionautoinjectors.com/product.sc?productId=7&categoryId=3

XJCreeper · Jan 2, 2011

Nice fix and great idea! Thanks for sharing this and giving us all a better fix than the asshats and the stealership will gouge ya for :cheers:

DieselSJ · Jan 2, 2011

jcnoble said:
Looks like you also have thread on type steel lines from the fuel tank, mine are pressed onto the rubber hose which goes to a quick connect metal fitting to the fuel rail.. I would have to run new lines from the tank?? Or can I cut the steel line and put on a screw type fitting (AN?) Nothing is standard on the 88xj fuel lines.

Look at the 4th picture. Those are fittings that convert hard line to AN. They use a compression fitting on the hard line. I also used those on another vehicle when I installed a trans cooler. They can be installed on any straight section of steel or aluminum tube.

jcnoble · Jan 2, 2011

Oh I see, those are the EAR-165056ERL tube adapters. Awesome, now I just need to upgrade my fuel rail from the Renix so the quick connect will work.

turbojeeper · Jan 2, 2011

Should still work on the renix rail shouldnt it. Didnt they use the quick connects on the renix too

jcnoble · Jan 2, 2011

The Renix has a slightly different quick connect. I tried to swap in a newer quick connect and it didn't seal correctly and leaked a whole lot. They don't make the older style, or at least I could't find one available anywhere except to go to junkyard and cut one off.

jcnoble · Jan 3, 2011

Or I could go the low budget method and do this......................

http://www.naxja.org/forum/showthread.php?t=1010146&highlight=fuel+line+disconnect

xcm · Jan 3, 2011

to get rid of at least one plastic clip, i think you can use the tube flare fitting, on at least one of the male outlets on the fuel rail as well, earls doesnt make both sizes though.
i really dont like the plastic clips...
http://www.anplumbing.com/TUBING_ADAPTERS.html

jcnoble · Jan 3, 2011

Thanks everyone for your help, I didn't know jack about fuel lines. Now I have several ideas.

Busted fuel line fitting...and a sweet fix

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