looking for fuel lines
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Junior User
Joined: Oct 2006
Posts: 80
Likes: 0
From: b.c north
looking for fuel lines
I have a 91f250 non turbo ive been havin starting issues and relized i have some leaks in fuel lines near tank.Also cant seem to stop leak at one injector replaced o rings twice and any info about injector leak,can they leak internaly?So if anybody knows were to get fuel line from i could use the info.Thanks for your help and its good to be back.Good to see all you guys are still here.
Thanks for your help.
Thanks for your help.
Junior User
Joined: Dec 2009
Posts: 91
Likes: 0
From: South Haven, MI.
New to the ford diesel trucks, so bare with me....
Cannot help with the leaking o-ring issues, again bare with me....
On my '89 Cummins powered dodge I had a fuel line break, I went to Auto-Zone and got all new lines for it for pretty cheap. Granted, they were'nt pre-bent or anything and I did have to cut some down to size, but they worked like a charm once I figured out what sizes (diameter) I needed. Been 4 years with them now and no problems what-so-ever.
Other than that, LMC truck (www.lmctruck.com) shows complete brake line kits and fuel line kits.
Hope this helps some.
Cannot help with the leaking o-ring issues, again bare with me....
On my '89 Cummins powered dodge I had a fuel line break, I went to Auto-Zone and got all new lines for it for pretty cheap. Granted, they were'nt pre-bent or anything and I did have to cut some down to size, but they worked like a charm once I figured out what sizes (diameter) I needed. Been 4 years with them now and no problems what-so-ever.
Other than that, LMC truck (www.lmctruck.com) shows complete brake line kits and fuel line kits.
Hope this helps some.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Leaks in the fuel lines between the tank selector valve and the tanks is not a common problem.
Those nylon lines are rather tough.
The couplers do have an O ring in them, but unless you have had the lines off and back on, again not a common problem.
The metal lines that come up out of the fuel tank and hooks to the lines, that is a problem area.
Dirt and saly just lays there, and washing it out is not really an option with the stock bed mounted.
If you want to replace them anyway, 3/8" fuel line for the supply line and 5/16" fuel line for the return line and attach them to the fittings with hose clamps.
Any place the line may rub on something, 1/2" heater hose makes an excellent bushing to protect the fuel lines.
From the tank selector valve forward the lines are metal, and several people have had problems with rust under the frame clips causing leaks.
Those nylon lines are rather tough.
The couplers do have an O ring in them, but unless you have had the lines off and back on, again not a common problem.
The metal lines that come up out of the fuel tank and hooks to the lines, that is a problem area.
Dirt and saly just lays there, and washing it out is not really an option with the stock bed mounted.
If you want to replace them anyway, 3/8" fuel line for the supply line and 5/16" fuel line for the return line and attach them to the fittings with hose clamps.
Any place the line may rub on something, 1/2" heater hose makes an excellent bushing to protect the fuel lines.
From the tank selector valve forward the lines are metal, and several people have had problems with rust under the frame clips causing leaks.
Fleet Owner
Joined: Jul 2006
Posts: 20,357
Likes: 813
From: Mi'kma'ki
Leaks in the fuel lines between the tank selector valve and the tanks is not a common problem.
Those nylon lines are rather tough.
The couplers do have an O ring in them, but unless you have had the lines off and back on, again not a common problem.
The metal lines that come up out of the fuel tank and hooks to the lines, that is a problem area.
Dirt and saly just lays there, and washing it out is not really an option with the stock bed mounted.
If you want to replace them anyway, 3/8" fuel line for the supply line and 5/16" fuel line for the return line and attach them to the fittings with hose clamps.
Any place the line may rub on something, 1/2" heater hose makes an excellent bushing to protect the fuel lines.
From the tank selector valve forward the lines are metal, and several people have had problems with rust under the frame clips causing leaks.
Those nylon lines are rather tough.
The couplers do have an O ring in them, but unless you have had the lines off and back on, again not a common problem.
The metal lines that come up out of the fuel tank and hooks to the lines, that is a problem area.
Dirt and saly just lays there, and washing it out is not really an option with the stock bed mounted.
If you want to replace them anyway, 3/8" fuel line for the supply line and 5/16" fuel line for the return line and attach them to the fittings with hose clamps.
Any place the line may rub on something, 1/2" heater hose makes an excellent bushing to protect the fuel lines.
From the tank selector valve forward the lines are metal, and several people have had problems with rust under the frame clips causing leaks.
say some fool replaced the lines,and used 5/16 for delivery too.what's going to happen to this fools truck lol.
is it going to starve for fuel under a load?
(man,i could have swore it all looked like the same size.oops.)
Thread Starter
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Junior User
Joined: Oct 2006
Posts: 80
Likes: 0
From: b.c north
it looks like its leaking from the top.Is there a fuel line repair kit avalible for these trucks?
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Freshman User
Joined: Dec 2009
Posts: 46
Likes: 0
From: GA
I just got back from my local Ford dealer and they had all the parts I needed to fix the fuel lines. One of the return fittings was $5.
Everyone recommends changing all the return lines and fittings. Probably good advice. I'm going to just try fixing one and see how it goes.
If I had followed all the good advice I've been given over the years, I could go buy a dozen new trucks and wouldn't have to fix this one!
Everyone recommends changing all the return lines and fittings. Probably good advice. I'm going to just try fixing one and see how it goes.
If I had followed all the good advice I've been given over the years, I could go buy a dozen new trucks and wouldn't have to fix this one!
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Senior User
Joined: Nov 2009
Posts: 169
Likes: 0
From: Missoula, MT
Leaks in the fuel lines between the tank selector valve and the tanks is not a common problem.
Those nylon lines are rather tough.
The metal lines that come up out of the fuel tank and hooks to the lines, that is a problem area.
Dirt and saly just lays there, and washing it out is not really an option with the stock bed mounted.
If you want to replace them anyway, 3/8" fuel line for the supply line and 5/16" fuel line for the return line and attach them to the fittings with hose clamps.
Any place the line may rub on something, 1/2" heater hose makes an excellent bushing to protect the fuel lines.
From the tank selector valve forward the lines are metal, and several people have had problems with rust under the frame clips causing leaks.
Those nylon lines are rather tough.
The couplers do have an O ring in them, but unless you have had the lines off and back on, again not a common problem.
Dirt and saly just lays there, and washing it out is not really an option with the stock bed mounted.
If you want to replace them anyway, 3/8" fuel line for the supply line and 5/16" fuel line for the return line and attach them to the fittings with hose clamps.
Any place the line may rub on something, 1/2" heater hose makes an excellent bushing to protect the fuel lines.
From the tank selector valve forward the lines are metal, and several people have had problems with rust under the frame clips causing leaks.
Fleet Owner
Joined: Jul 2006
Posts: 20,357
Likes: 813
From: Mi'kma'ki
OR
6.9 6.9L 7.3 7.3L Ford Injector Return Line Kit 83 - 88:eBay Motors (item 170424041422 end time Jan-07-10 23:59:00 PST)
AND (optional.but worth it.)
use Viton O rings bought separately,and say goodbye to leaks from those standard O rings.
Replacement O-rings for Ford Diesel Engines
Senior User
Joined: Nov 2009
Posts: 255
Likes: 1
Mine has 5/16" for both.
Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
I just got back from my local Ford dealer and they had all the parts I needed to fix the fuel lines. One of the return fittings was $5.
Everyone recommends changing all the return lines and fittings. Probably good advice. I'm going to just try fixing one and see how it goes.
If I had followed all the good advice I've been given over the years, I could go buy a dozen new trucks and wouldn't have to fix this one!
Everyone recommends changing all the return lines and fittings. Probably good advice. I'm going to just try fixing one and see how it goes.
If I had followed all the good advice I've been given over the years, I could go buy a dozen new trucks and wouldn't have to fix this one!
Give it a month and post back how it's working please.
Fleet Owner
Joined: Jul 2006
Posts: 20,357
Likes: 813
From: Mi'kma'ki
oh good.i could have swore mine was too.thanks.
it must be diff for our 9th generations then.
i saw the tank clips where larger and smaller for the stock FSV,but the lines looked the same(edit:yeah,i know they are,cus i slid the hose on each and it fit the same going into/out of the tanks).i knew i couldn't go by the new FSV cus its just a universal anyway.(the 5/16 lines slid on np with some Vaseline on the return fittings.)
it must be diff for our 9th generations then.
i saw the tank clips where larger and smaller for the stock FSV,but the lines looked the same(edit:yeah,i know they are,cus i slid the hose on each and it fit the same going into/out of the tanks).i knew i couldn't go by the new FSV cus its just a universal anyway.(the 5/16 lines slid on np with some Vaseline on the return fittings.)
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