cummins 5.9 fuel line leaks

Run to Rund · 04-19-2012, 12:28 AM

Tighten the new one carefully so the support/vibration bracket has no stress on the line. #6 occasionally cracked until a support bracket was added around 2005 or so; it goes to the engine lift bracket bolt that is converted to a bolt/stud. #4 is the most common one to fail for some reason. Get it from Cummins for about $25-30.

Jim Wahl · 05-09-2012, 09:47 AM

Quote:

Originally Posted by Run to Rund

Tighten the new one carefully so the support/vibration bracket has no stress on the line. #6 occasionally cracked until a support bracket was added around 2005 or so; it goes to the engine lift bracket bolt that is converted to a bolt/stud. #4 is the most common one to fail for some reason. Get it from Cummins for about $25-30.

I have an '05 2500 w/ Cummins 5.9. I have all of 44,000 miles on it, mostly towing, should I be worried? I've never heard of this! Jim

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Run to Rund · 05-09-2012, 01:09 PM

I worry a lot about a lot of things so I carry spare lines and a 3/4" open end wrench. I wouldn't say the failure is common but it happens enough to be cautious, especially if you go on long trips, etc. You can't just continue running with a cracked line as it is under rail pressure all the time. Rail pressure does go up with more accelerator pedal, from about 5000 psi at idle to a max of about 23,000 psi.

Jim Wahl · 05-09-2012, 11:28 PM

Here ya go:

http://www.dieselbombers.com/5-9-lit...ctor-line.html

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04-19-2012, 12:28 AM	#1
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 586 Likes: 9 Liked 55 Times in 28 Posts	Re: cummins 5.9 fuel line leaks Tighten the new one carefully so the support/vibration bracket has no stress on the line. #6 occasionally cracked until a support bracket was added around 2005 or so; it goes to the engine lift bracket bolt that is converted to a bolt/stud. #4 is the most common one to fail for some reason. Get it from Cummins for about $25-30.

05-09-2012, 01:09 PM	#3
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 586 Likes: 9 Liked 55 Times in 28 Posts	Re: cummins 5.9 fuel line leaks I worry a lot about a lot of things so I carry spare lines and a 3/4" open end wrench. I wouldn't say the failure is common but it happens enough to be cautious, especially if you go on long trips, etc. You can't just continue running with a cracked line as it is under rail pressure all the time. Rail pressure does go up with more accelerator pedal, from about 5000 psi at idle to a max of about 23,000 psi.

05-09-2012, 11:28 PM	#4
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,845 Likes: 672 Liked 683 Times in 129 Posts	Re: cummins 5.9 fuel line leaks Here ya go: http://www.dieselbombers.com/5-9-lit...ctor-line.html . __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association.