So I go to start my truck this AM....it takes a few more cranks to start than usual, don't think much of it. I catch a faint whiff of fuel smell, but not major. So I go inside for just a min to grab my lunch off the counter, and when I come back out I see fuel pouring down onto the ground. Pouring may be a slight exaggeration, but it was def more than a trickle. I quick shut it off, and am in a hurry, so I catch a ride to work.

Fast forward to tonight. I have the wife at the helm, and I check it out while she starts it up. Turns out, fuel is spraying out of a fitting near the back of the engine. I am way less familiar with these engines than I should be, so I can't even identify what the part is. Rather embarrassing, really.

So I have a few questions based on this situation. Looking at the pictures below, can somebody tell me what the part is? Or even better, is there an exploded parts diagram I can look at somewhere?

The fuel appears to be spraying backwards from where the nut meets the fuel line, or just behind there (spray pic attached as well). What would cause something like that to happen? Just age and corrosion, or is there something bigger happening here? I sure hope not....

Is that line as short as it appears, and is therefore easy to replace? Or is this something that I need to let an expert handle? I am mechanically inclined, so that's not a concern, just don't have the experience with this engine.

Thanks a lot for any help with this!

 

That is an injector line. Be very careful, fuel can come out of that line in excess of 26k PSI. It is very dangerous!!!

I think that the #4 lines were prone to cracking. Search in the third gen section for injector lines, you'll come across it.

 

I can't tell from the picture, but is that the #4 fuel line? Count from the front of the radiator back fuel lines and tell us which one it is. If it's the #4 cylinder fuel line, they go out (split, crack, ect) all the time. I don't know anyone who hasn't had their #4 line replaced.

Should be under $80 for a new one, if that what it is. Good luck.

 

Best place to crack a fuel line, in the driveway.... Go buy a lottery ticket, you are one lucky man. LOL

 

lol, well the way my luck goes, i used it all up with it popping in the driveway. If i go buy a ticket now, I'd probably end up owing a million dollars.

I went out and looked it over again, it does indeed look like the #4. Is it really just as easy as backing off the nuts (i assume based on the material, i should use a flare nut wrench), take off the old one, and put the new one in its place? Is there any sort of bleed process i need to do or anything?

Edit: oh yeah...anybody have a pn handy to save me a search?

 

Yes, old off, new on. I don't have the tq specs handy, tho.

No bleeding, it is a self priming system. You don't need a p/n, just your vin for the dealer. Better buy two.

 

Check all the brackets and clamps that hold the fuel lines and make sure their tight. Serch for threads about #4 fuel line and fuel leaks. Lots of info on this. Common problem.

 

I believe the torque spec is 38 ft. lbs. if memory serves me right. I would say congrats due to being so lucky but that sounds weird haha

 

So... @ FunFinder5... you have NOW kn own someone who has NOT had a inj line failure like you guys have spoke about.
Amazing huh?
Knock on Wood.... LOL

I have over 214K on my ol truck and run the Banks 6-Gun w/Speedloader stacked and on occassion have run it on #6 stop light racing so I'm sure those lines have seen all of 26K PSI or more!
Guess I'm just lucky.

 

very good! thanks a lot guys, i appreciate the help!

 

wow, only $25 from the local cummins place and its in stock! Woo!

 

That's great. There was a time they were not in stock.

Buy two!

 

True Dat'^^^
Mine decided to crack with a full load in the bed and a U-haul in tow 150 miles from home on a SUNDAY! Fun stuff...always have an extra in the truck now!

 

Glad it was a simple fix for you. Ever since I was made aware of this issue, courtesy of DTR, I check and tighten all six clamps every oil change. So far, no issues with 117,000 miles on the clock!

 

Always carry a spare in the center console. Seems silly to carry a spare drive belt and not a #4 Injector line