So the wife comes home after taking the horse to the doctor and reports a diesel leak. I see the drip drip drip, but nothing major. We go to dinner and I take another look when we get home- nothing, nada. Finally get out my light and take a better look and notice it looks like it may have been doing it for a while... all "nasty" along the side of the tank. Probably never noticed it as we only use the truck to chauffer the horse around.

As I'm not the slightest bit talented when it comes to vehicles, is a repair simple enough for me? I've been reading about the fuel line replacement, but as the leak is only when running or just shut off, I didn't think I needed to go to all that...

And can someone explain the 2 fuel lines? Is that "just a diesel thing" or particular to Dodge?

Thanks for educating this rookie...

-Steve

 

same thing here , only happens when my tank is full though. Ive just been busy and havent looked at it closely

 

fuel lines are leaking.
mine started leaking right on top of the tank.
they were actually rusted thru, right near the top of the tank, but then the fuel runs down the fuel line into the frame rail.

The lines are about $300-$350.
Labor from cummins was a pretty penny.

 

is there any maintainence that can be done to prevent the lines from corroding to this point. i actually looked under mine last night since there is only a 1/4 tank of fuel. looks to be more at the fitting itself.

 

What i always do when replacing the hoses by the engine is abandon the stock metal lines and run hose from engine to tank. A lot cheaper and more reliable than replacing the metal lines.

 

I'm with Bill, this is a known issue with our trucks, I decided to keep mine hardlines, so I made the 3/8" out of Stainless tubing which I had, and the 5/16" return out of brake line, which I painted. About 4 feet of diesel rated hose and full circle hose clamps and I was done, no more quick disconnects, etc......and saved about 550 bucks to boot!

 

going on the "to do" list

 

I used $0.77/foot nylon to replace parts of stock lines as necessary. If they start leaking I will install full length nylon lines. The paranoid types could install $4/foot Teflon, still much cheaper than $300 dealer sets.
-P