The Nylon fuel lines on our trucks have been discontinued by ford. A repair kit is available, I bought mine from Rock Auto. I found it easier to remove the fuel lines off the truck, and do the work on the ground, but you could do the repair on the truck.


Prepare the lines for repair. clean them



Here's the kits, one 3/8", one 5/16"




Cut the line with a razor knife



Heat the line, I used a heat gun, but they suggested boiling water. Don't use a lot of heat, just enough to soften the line so the brass slips in



Brass inserted, to complete the repair, heat the other side, and push it on




I repaired supply, and return.



I really like the new ends, they "snap" on, and no longer require the plastic push in piece. To remove them, you just push in on the white button, and pull.

 

My 86 F-150 just developed a fuel line leak on my front/side mount tank and I am trying to figure out how to repair and your post is perfect.

1. Could you please provide more information on Rock Auto? is it an online or store in MD?
2. What are the two fuel lines going from the sending unit to the fuel pump? I noticed that one line is larger than the other. Where the lines attach to the sending unit one has a straight fitting and the other has a 90 elbow. The leak is the line with the straight fitting.

Thanks,
James

 

rock auto.com, a good site.
I also saw them at advance the other day in the help section.

Make sure the repair kit says Ford on it, chrysler and gm use a different fitting

The supply line is 3/8", and the return line is 5/16". If your ends arent't bad, just get the brass insert,and just make a straight repair

make sure all the gas is out of the line before you heat it

They make 90* fittings as well as straight ones. Just make sure which line you are working on, supply,3/8", and return,5/16"

 

FYI the fuel line repiar kits are made by Dorman Products most local auto parts stores can get them I know for sure NAPA carries them. Dorman makes a bunch of repair parts for all vehciles do a search for Dorman products and thye have a cataloge look up by make ,model year search then take Dorman part number to NAPA, Autozone or OReiles and thye can get it for you.

 

Thank you Charlie and Ecfool.

 

Charlie,

You wrote that they 'snap' on but I wanted to be sure before I break anything. Am I supposed to take out white 'u' retainer clip before I place the fitting on the stem or leave it in and just 'snap' it onto the stem as you indicted?

Thanks

 

leave it, just make sure the end is clean, and line it up straight. push it until it "clicks". tug gently on it to make sure it stayed, and your good. If you are unsure, I'm working near croften tonight, I can sneek over and give you a hand

 

I didn't get to it yesterday, but thanks for the info and the offer for help.

 

I finally got to the fuel line repair today. Everything went smoothly (thanks DustyBumpers) until I tried to connect the new quick connect for the supply line quick connect to the sending unit. The quick connect (5/16") on the repair kit I bought (Dorman 800-054) was too small !! I need a 3/8" quick connect and not the 5/16", which is supposed to be standard on my model.

I'm looking on the Dorman site and the rock auto site to fins a 3/8" quick connect withe a 3/8" line. Does anyone know the part number off hand?

 

I found a 3/8 x 3/8 ford fitting and repair at Napa in Annapolis, might want to give them a try. The napa in Millersville didn't have any there.

 

Thanks. I hit up the NAPA in Glen Burnie which is open on Sundays. Problem fixed and I'm back in business!

 

cool. I'm glad you got it right......... Now, on to the next project........lol

 

You're right! While under the truck, I noticed that the rubber insulator at the center drive shaft support is tore all to pieces. I'm going through my LMC Catalog, my Haynes Manual and, of course, this forum to find out more about it and how to fix it.

Any pointers?

 

carrier bearing, you'll want to bring that over to my house to fix , your going to need a torch

 

I'll take your word on that. Thanks for the offer. I'll be in touch shortly to work something out.