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-   -   Plastic fuel line mod anyone ? (http://www.wranglerforum.com/f218/plastic-fuel-line-mod-anyone-139652.html)

s_man692000 02-14-2012 01:16 PM

Plastic fuel line mod anyone ?
 
Hey guys ,when I first got my yj about 2 years ago one of the first things I had to deal with was the plastic fuel line under the hood that feeds the fuel rail .The piece that locks onto the rail had a hairline crack and was seeping ,I was able to JB weld it and it sealed .Now 2 years later she is starting to seep again. I could buy replacements or come up with something else .I dont want to splice with rubber fuel line .But was maybe thinking braided fuel hose with threaded ends and connect to the metal lines with compression fittings ? Maybe this has been done /attempted and failed ? Any suggestions/ideas would be great .

Dave

Hghgrad 02-14-2012 02:07 PM

I've done rubber hose on my yj and xj and nEver had an issue. There's a rubber line that connects the fuel filter on the yj, so I can't see it ever really being an issue.

rebelBullDawg325 02-14-2012 02:08 PM

you can buy replacement parts for the nylon hose. i think you need a special tool to press the new fitting into the hose though. they should have an entire section at advance or auto zone or wherever for just the nylon fuel line and fittings and what not.

i know you said you dont want to replace with rubber fuel line, but thats what i did and it works fine.

s_man692000 02-15-2012 10:37 AM

Not that I dont want to go with rubber,because I certainly will if I dont come up with something else .I just though steel braided hose would just have that cool heavy duty look to it . NHRA rules state that more than 12" of rubber fuel line should not be used on any vehicle (I know that doesnt apply to a Jeep ) just some silly trivia I remember from my family's racing days lol.Thanks for the reply's !!

rebelBullDawg325 02-15-2012 11:04 AM

If you do go with the rubber line, shoot me a pm and I can tell us everything..... I did this just 2wks ago

STUUPID 02-15-2012 12:54 PM

I was contemplating replacement of these lines also. Using AN fittings and adjustable fuel pressure regulator. Brazing on the fittings to the original fuel rail. I am not sure if someone has attempted this but it would be good to know before attempting!

s_man692000 02-16-2012 07:42 AM

I'm sure I could figure out how to install rubber lines ,STUUPID what would be the benefit of an adjustable fuel pressure regulator ? I found braided fuel line on Mcmaster Carr ,its just the fittings at each end are kinda big ID is right and all but the threads are 1/2" .I'm gonna keep researching this ,there is a race shop not far from here ,I am going to stop in and see if they have any suggestions ,I am just hooked on the idea of braided line now .Thanks for the replies !

STUUPID 02-16-2012 11:14 AM

I would like to go with an adjustable regulator and solve the plastic line issue all at once. I know hesco sells one directly to fit the fuel rail for roun 300 bills. I am running 24lb injectors now and with a lil more pressure the can make 27lb.. I am running a Lunati cam with .507 lift and 262 duration a 62mm throttle body and worked over head. Just like to tinker an squeeze as many horses as I can...lol

rebelBullDawg325 02-16-2012 11:15 AM

Quote:

Originally Posted by s_man692000 (Post 2037375)
I'm sure I could figure out how to install rubber lines ,STUUPID what would be the benefit of an adjustable fuel pressure regulator ? I found braided fuel line on Mcmaster Carr ,its just the fittings at each end are kinda big ID is right and all but the threads are 1/2" .I'm gonna keep researching this ,there is a race shop not far from here ,I am going to stop in and see if they have any suggestions ,I am just hooked on the idea of braided line now .Thanks for the replies !

the large fittings on the end are why i didnt go tht route. wasnt sure if i would have enough room for them.

and yes, rubber lines are simple. its just that with the supply side line, the fuel rail end is actually larger than the metal hose coming from the tank. you need to get an adapter to step it up from a ( i think the sizes are) 5/16 - 3/8. where as on the return line its 5/16 the whole way.

Yahoomarine 02-26-2012 02:22 PM

Are the plastic lines available preformed from the dealer?
 
Good afternoon. The supply line on my 1994 2.5L YJ split about halfway between the pump and the injector rack. It looks like I could use a rubber hose as mentioned above but if they are available I'd prefer a factory made part. Has anyone purchased a Jeep part for this?

Should I use a new rubber fuel hose what does the ends of the fuel line look like? Will using a stainless steel hose clamp work?

Thanks, Rich

rebelBullDawg325 02-26-2012 05:03 PM

Quote:

Originally Posted by Yahoomarine (Post 2076668)
Good afternoon. The supply line on my 1994 2.5L YJ split about halfway between the pump and the injector rack. It looks like I could use a rubber hose as mentioned above but if they are available I'd prefer a factory made part. Has anyone purchased a Jeep part for this?

Should I use a new rubber fuel hose what does the ends of the fuel line look like? Will using a stainless steel hose clamp work?

Thanks, Rich

hey, i dont think there's a "factory replacement" but you can buy the nylon tubing and fittings at most autoparts stores. i didnt want to go through that trouble so i just bought some rubber fuel injection hose and put it on with hose fuel line hose clamps.

Yahoomarine 02-27-2012 07:42 PM

The plastic fuel line is no longer available from the dealer so I will look for the parts at CarQuest, Advance etc. and try to fab my own.

Thanks for the help, Rich

Yahoomarine 03-03-2012 04:41 PM

I visited CarQuest today. They did not have any complete assemblies or couplings, but did have a splice repair kit for $20. It included 12" of tubing and 2 brass unions. I cut out about 4" and spliced in 4 and it did the trick. Getting the tubing on the brass barb was a pain but doable.

Rich

rebelBullDawg325 03-03-2012 11:09 PM

glad you got it. i knew they didnt have any plug and play assemblies, just the tubing and feedings to make your own. but i was under the impression you need to use a special tool to insert fittings into the tubing which is why i just went with rubber fuel line instead. obviously you do not need the tool since you didnt use it, but im sure it would have it much easier. regardless. glad you got it worked out.

2xs 03-04-2012 02:25 AM

Quote:

Originally Posted by s_man692000 (Post 2033780)
...NHRA rules.....


I think I found your problem here, Let me see if I can remember when NHRA had an off road YJ bracket...

Oh yea, NEVER.


Use what works IMO, Rubber is easier, and less expensive, perhaps patch it with rubber until you can get a nice steel braided setup like you want, Im sure if NHRA ever had a trail fix, they would learn to use whatever gets you rolling again...

Yahoomarine 03-05-2012 07:08 PM

rebelbd: How did you route and secure the rubber fuel line?

Rich

rebelBullDawg325 03-06-2012 01:12 AM

The nylon lines connect to hard lines just below the intake, I cut the nylon off of those first. the hard lines were somewhat flared at the ends, so I took ( I think 5/16) fuel injection hose and slid over each hard line. I went a few inches on each and put 2 fuel hose clamps on each. The return line is 5/16 at the fuel rail so the rubber hose can go straight to it. I made sure to slide it past the shoulder on rail and put 2 fuel clamps on it ( one on each side of the shoulder). The supply side is a 3/8 on the fuel rail. So I used a barbed brass coupling to step up from 5/16 to 3/8 and attached the same way at the rail. I put fuel resistant silicon on the outside of the coupling and 2 clamps on each side of it as well.

s_man692000 03-28-2012 01:41 PM

Update : I found some braided line from Mcmaster carr ,going to get it soon,I will post pics when its done .


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