Cracked OEM nylon fuel line

[thegreatjustino]

After nearly 54 years, the OEM nylon fuel line from the tank to the engine bay has sprung a leak right where it runs under the brake imbalance switch under the master cylinder.

Am I correct in thinking the best way to repair this is to replace the entire run of nylon line from the tank to the front? After all, the rest of it is 54 years old and has the potential to crack at this point as well.

Is there something modern/better to replace it with, or just buy a length of the same stuff long enough to work? Stock tank, carburetor, and fuel system. No need for high pressure lines. This is about as stock of a Bronco as you can get and there is zero chance that I'll ever convert it to EFI, so no need other than stock configuration.

Suggestions, ideas, upgrades welcome so I only do this one in the next 54 years.

 

[AC932]

I cut out all the cracked sections and coupled them with a larger sized rubber hose. Held on with hose clamps. It's worked for me, though it's probably better to replace all of it

 

[TNcowboy]

I'd replace the whole thing. Not difficult and inexpensive..$18 at graveyard
https://shop.broncograveyard.com/19...astic-Nylon-Main-Fuel-Line/productinfo/10296/

 

[56f100bbw]

My 76 nylon fuel line was junk so I did steel from tank to carb

 

[House]

A little more expensive, but here is a nice kit from Northeast:
https://northeastclassicfordparts.c...73-1974-1975-1976-1977-early-ford-bronco.html

 

[jckkys]

I'm redoing mine now and need to know the routing including where the hold downs go. The frame off was professionally done so everything looks pretty. The problem is they weren't concerned with originality and I really need diagrams of all the fuel, vent, and brake lines. The OE blue plastic hold downs aren't available, but they are in black plastic. Rattle can blue paint can fix that. My plastic fuel lines were still good but got thrown out anyway. It's all kind of a PITA but I could never have done the paint and body work they did. The truck is gorgeous.

 

[taipeichris]

Hi,
I agree with 56f100bbw, replace the entire system with metal lines.

17 years ago my OEM were leaking when I bought my 66. I replaced it with rubber fuel hose and 8 years later it got gummy and clogged up. I hate redoing work on my Bronco.

The steel lines I used are hard brake lines from any auto parts store, cheap, last long and were super easy to flare. There’s even a “how-to” write up on flaring the lines. It’s better safe than sorry with leaking gasoline.

Just measure your bends with a metal coat hanger and get a cheap set of tools; a tube bender, a tube cutting tool and flaring tool.

Good luck!
Chris

PS Here’s the flaring linky.

http://classicbroncos.com/tech/brake-line-double-flaring

 

[ransil]

Dorman makes it should be able to get locally

https://www.dormanproducts.com/p-12454-800-071.aspx

 

[tirewater]

Dorman makes it should be able to get locally

https://www.dormanproducts.com/p-12454-800-071.aspx

I ended up with Amazon.

https://www.amazon.com/gp/product/B000E323IA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

[Rustytruck]

I replaced nylon with nylon when I was forced to redo mine because of an over zelos muffler replacement. I warned the guy of plastic lines and took the torch and cut through them any way that was an interesting moment it time. I didn't rerun then on the inside of the frame rail like the factory did. I moved them to mostly on top of the rail. Just use A-1 marine fuel line for your connections and not the usual automotive crap they have these days. Back when I did it no one had nylon hose so I got hose and fittings from Mc Master Carr.

 

[KyleQ]

Same deal, happened to me in that same exact place.

I know nylon is common on the new stuff but I wanted it nowhere on my classic so I ran 3/8" coated brake line from the front to the rear with EFI rated hose/clamps at the ends where it needed it. Zero chance for failure, room to grow. CHEAP.