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I have an 88 F250 4x4... 7.5 but was the same on a 5.7. Dual tanks. There is a short fuel line that runs from the fuel tank switch over can to the fuel pump. It is a plastic line with the snap on plastic fittings. Maybe 10" long? Someone before me switched it to a rubber hose that leaks. Is that plastic tube/hose available after market? Or wondering if I can find one on the bay?? Not sure what it would be called besides fuel line.
You will probably have to make the line out of bulk nylon hose and the appropriate connectors. I think someone posted lines from Jeff’s Bronco Graveyard but I think that was all ‘90 and up.
You can buy the nylon fuel line in bulk on Amazon. Be sure to get the Dorman tool that presses the line onto the fittings as well.
Ok, I will have to look into that. I know you can buy the line, but I never had good luck with the fittings. I will have to look for the tool. Didn't know there was one.
It has been many years but not sure if one fitting was a 90... Time to crawl under there. When it gets a bit warmer... I have a bad wire for the brake light to check out too. Thanks
When I bought the Bronco II, one of the lines at the tank was broken. I went through three hose end kits trying to get the nylon heated up enough but not too much to fully insert the barbed hose connector. When I needed to make a new hose for the F-150 I broken down and bought the tool.
It was a pain to get everything set up in the tool but so much easier to install the connectors.
Where did you find those ends? I would and did use the correct SAE connectors recommended by Dorman for Ford.
Last edited by My4Fordtrucks; Feb 16, 2026 at 07:57 AM.
The Dorman kit shows all kinds of connectors. But doesn't show what fits the old school Ford connectors. Not sure if the new style works with the old ones? Dorman still sells the fix it kits for the old style. It looks like they change the clip a bit, but still looks like the removable clip.
with a bunch of connectors. But will they replace the old school fittings??
In the reviews some said they just held the line with a brake flare kit and heated with boiling water and pushed the connector on. The kit would be better. (easier) Even Dorman recommended heating the tubing.
The nylon tubing should be 1/4" ID. Your fittings need to be for 1/4" nylon tubing and then fit 5/16" (return line) steel line or 3/8" (pressure line) steel line. At least that is what my '91 takes.
I don’t know… you would have to figure out what is in the kit. $40 more for a kit with a lot of connectors I’ll never use. I think I only paid $40 for the tool because it was a return.
Easier said than done. I tried boiling water as recommended in the instructions. The nylon cools off very fast so you have to get the fitting or hose to hose connector fully inserted before that happens. I also tried using a heat gun which seemed to work better. The tool holds the hose without damaging the outside of the tubing and the clamp forces the fitting into the hose. Once you have it set up for whatever connector you are going to use it takes a second or two to press in the fitting.
The nylon tubing should be 1/4" ID. Your fittings need to be for 1/4" nylon tubing and then fit 5/16" (return line) steel line or 3/8" (pressure line) steel line. At least that is what my '91 takes.
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