Fuel leak

Topic: Fuel leak (Read 1984 times) previous topic - next topic

Re: Fuel leak

Reply #25 – January 26, 2019, 09:03:36 am

Wont know until you try ... $45 is cheap for an OEM part from Cummins.. You are your own limitation.. now get out their an make it happen.. I am waiting on " we are up and running thread and I did it myself"!!

Go get em Scott!!!

Re: Fuel leak

Reply #26 – January 26, 2019, 09:22:35 am

Two suggestions:

Clean the area at both ends of the pipe VERY well. You do not want dirt to get in there. If there are dirty items above or around where you are working that could cause dirt to get in, either clean them or wrap them in plastic.

Start the threads by hand to verify not cross threading them. Do NOT over-torque them (Cummins should be able to tell you proper torque).

Re: Fuel leak

Reply #27 – January 26, 2019, 10:11:37 am

Re: Fuel leak

Reply #28 – January 26, 2019, 12:34:31 pm

Scott, a couple of months ago a coolant leak (while away from home) brought my attention to the area and it turned out to be a pinhole leak in a rusted pipe. I decided that I did not want to repeat the experience, especially with the nearby fuel lines. Because it is difficult to change out any given pipe without removing others, I replaced all of them. As far as the parts and numbers are concerned, I posted links to photos and part numbers earlier - I'm not sure you saw them.

Re: Fuel leak

Reply #29 – January 26, 2019, 12:56:04 pm

would definitely do what Sven said,replace all now,you won't have to later.

Re: Fuel leak

Reply #30 – January 26, 2019, 01:01:59 pm

Quote from: John44 – January 26, 2019, 12:56:04 pm

would definitely do what Sven said,replace all now,you won't have to later.

Agree, IF all are degraded. If only one bad and rest OK........

Re: Fuel leak

Reply #31 – January 26, 2019, 01:21:54 pm

In my situation, the pipes were all crusty with rust; it was a matter of time.

Re: Fuel leak

Reply #32 – January 26, 2019, 02:15:12 pm

The other line looks corroded as well. Will replace this line now and replace the other line soon.

Re: Fuel leak

Reply #33 – January 29, 2019, 07:28:55 pm

Update -
Got the fuel line from Cummings Avondale today - looks pretty close.

After chatting with Coach net and Cummins we have decided to have Affinity Service in Prescott change the line tomorrow AM.

Met both of the "Diesel" techs and they understood what needed to be replaced and felt confident that it is not a bfd. Shop-time est is 1 to 1 1/2.

I figured I could do it and decided to pay the $$.

Thanks again for all comments. Seriously couldn't keep on doing this without your help.

Re: Fuel leak

Reply #34 – January 29, 2019, 10:17:39 pm

Great news Scott- have them do a test drive under real operating conditions before you pay and leave the area. Just my suggestion.

Cya down the road

Re: Fuel leak

Reply #35 – January 29, 2019, 10:54:46 pm

Good news Scott glad you figured it out 👍

Re: Fuel leak

Reply #36 – January 29, 2019, 11:14:13 pm

Scott, mechanics or anybody else had to learn by baby steps. You can do it also and become more self sufficient, and this forum can probably help you if you get into a bind or advise you to leave it up to a hired tech. When time and physical abilities allow I would highly recommend taking some of these baby steps on a simple projects like hoses, belts, filters, etc. The satisfaction,experience and pride will build. You may make an mistake or two, but techs are not imune to that either as each machine is somewhat unique in some form or other.

Re: Fuel leak

Reply #37 – January 30, 2019, 10:05:31 am

You can always call them after you try and fail..

Re: Fuel leak

Reply #38 – January 30, 2019, 01:08:50 pm

I am also replacing the Fuel Line Return and the tube that runs from the fuel pump to the ECM Cooling Plate. Parts are ordered from Cummins and will replace - myself - when received.

BTW - found the Cummins Fuel Flow Diagram an Barry's website.

Note: As Caleb, the tech, started to remove the Fuel Line to the injector tubing, it broke near the flange nut.

Cost for the tech to replace the tubing this morning was $115.00. I feel well worth the $$$.

Cummings part and install.

Thanks again ya'll.

Re: Fuel leak

Reply #39 – January 30, 2019, 01:32:15 pm

Glad you got that changed now or looks like it would have been a disaster waiting to happen on the road. I think I will check mine as it is 2 yrs older than yours.
JohnH

Re: Fuel leak

Reply #40 – February 01, 2019, 09:55:43 am

Replacing the other two lines today.

Should I use a "thread sealant" when I screw the other lines in place?

Re: Fuel leak

Reply #41 – February 01, 2019, 10:00:03 am

Not if they are flare ends. Thread sealant is for pipe threads and Loctite is for bolts and nuts.

Re: Fuel leak

Reply #42 – February 01, 2019, 10:46:46 am

What do I use to torque to 18ft# using an open end wrench?

Re: Fuel leak

Reply #43 – February 01, 2019, 11:02:30 am

Quote from: Carol & Scott – February 01, 2019, 10:46:46 am

What do I use to torque to 18ft# using an open end wrench?

It takes a crows foot to get the exact torque. If you have a vice put a bolt in it and torque it with a torque wrench and feel with an open end about how much force it takes. It really isn't that critical unless you over torque enough to strip it. You can bet most shop mechanics including me would not be using a torque wrench on line fittings.

Re: Fuel leak

Reply #44 – February 01, 2019, 11:04:26 am

Exactly what I was going to say.

Re: Fuel leak

Reply #45 – February 01, 2019, 11:06:08 am

Thanks guys. 😊

Re: Fuel leak

Reply #46 – February 01, 2019, 03:08:18 pm

Replaced the high pressure fuel return line. Had to bend rigid tubing to align the threads.

No leaks - yet. 😊

PITA - A couple of hours because I'm not the sharpest tack in the box.

Re: Fuel leak

Reply #47 – February 01, 2019, 03:37:29 pm

Quote from: Carol & Scott – February 01, 2019, 03:08:18 pm

Replaced the high pressure fuel return line. Had to bend rigid tubing to align the threads.

No leaks - yet. 😊

PITA - A couple of hours because I'm not the sharpest tack in the box.

Well at least you are in the box...

Re: Fuel leak

Reply #48 – February 01, 2019, 04:13:45 pm

Quote from: Carol & Scott – February 01, 2019, 03:08:18 pm

Replaced the high pressure fuel return line. Had to bend rigid tubing to align the threads.

No leaks - yet. 😊

PITA - A couple of hours because I'm not the sharpest tack in the box.

It gets easier to fix stuff as you learn how they work. Good that you did it yourself and saved some money while getting experience.

Re: Fuel leak

Reply #49 – February 01, 2019, 04:48:53 pm

Offset crows foot and recalculate the torque wrenches setting to compensate for the offset.

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