[RickHredf250]

Well I have been watching them for a while now and today I decided it was time to change them.
I have run about 30k miles of homemade B100 through the truck and it has loved it.
I suspected the stock fuel lines (return side) that go into each head in the front would not last and I was right.
They turned to mush and swelled some.
You have to careful cause B100 leaks on wiring will eat the insualation off leaving you a bare wire and if that bare wire is the fuel heater and if that bare fuel heater wire shorts, guess what, it will blow the fuse and the truck will die/not start. Does it sound like I am speaking first hand? I am! Last fall.
Anyway, I put on some stock used lines I had till I can either have some Viton fuel lines made or decide to spend the money on the Grease Works kit, 125 bucks 94-97 Ford Powerstroke. So far, all the other stock fuel lines look ok. Will probaly have to change my aux tank lines this fall, they are Parker 801. I think I will go through the work of replacing them as much steel line as I can.
Soooo, if you are running heavy doses of Biodiesel, check those return lines under the hood.
The truck I was working was the 97 F250.
Rick H...

 

[hheynow]

I had that sticky black goo melted return fuel lines problem last year. I replaced it with Dayco Gen 2 hose and have been problem free since.

 

[RickHredf250]

I am talking about the ones with the ends on them. I replaced the short lines several times now. Still worth the effort.
Rick H...

 

[Spencnaz]

I have been fighting air leak gremlins off and on the past couple of months, it got really bad this last weekend.

I'm replacing the fuel lines with BD resistant line today or tomorrow depending on my schedule.

The truck is sucking so much air that it will only run for a couple miles before sputtering and dying. I put a post on the 6.9 forum if you're interested in the full story.

 

[RickHredf250]

What line are going to replace it with?
Thats why I like the regulated return, air is not a problem, just gets purged back into the tank.
Rick H...

 

[Spencnaz]

I'm replacing the hose with Parker 3970X Super-Flex hose, it's biodiesel resistant and conforms to the ASTM D6751 standard.

 

[greasejunky]

i replaced mine with hydrolic hoses, remove hoses and take them to O"Rileys and thay can build what you need.

 

[RickHredf250]

[ QUOTE ]
I'm replacing the hose with Parker 3970X Super-Flex hose, it's biodiesel resistant and conforms to the ASTM D6751 standard.

[/ QUOTE ]

Well it took some doing to get the hose but they finally found it in Houston at another Parker Store. Seems the factory is like 270k feet back ordered on the stuff!
The hydrualic shop made mine up and we'll see how it does. I also replaced the short lines with the same hose.
I would not let the O'Riellys around here make anything for me!!!!
Wish they were more like your store cause its the closet auto parts store to me, but they are all morons here!
Ricdk H...

 

[Spencnaz]

Yeah it was great, they even delivered the 20' I bought to me that same morning!

I keep that section of fuel hose in the truck just in case now.