Duramax fuel line replacement

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,692
1,971
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Mid Michigan
IMO, the best way to post pics here now is to upload to Photobucket (or similar) and then direct link to here. Otherwise, resize them on your computer before trying to upload here.

wikid, nice to know your first name now. :roflmao: Thanks for all the info, Judd
 

Kunz111

Member
Jan 16, 2016
113
2
18


Got all of the old junk out tonight. Now I just gotta find some fitting so I can order everything up.
 
Last edited:

Blackmax123

Member
Aug 2, 2014
683
1
18
central Pennsylvania
Thanks..

Anyone that wants to run an -8 feed and -6 return straight to and from the cp3 in the valley. Just do it on a day you have good patients. I had to remove the regulator on both my pumps to get the feed line tight. On the pump in the valley I had to remove the high pressure line and fitting to get the return line tight.
 

malibu795

misspeelleerr
Apr 28, 2007
8,312
623
113
42
in the buckeye state
What's the thread spec on fuel temp sensor?
I replaced Stock Supply lines with -8 from tank to filter and -6 from filter to cp3.. return line is -6 from or disconnect to tank
Also remove or supply crossover tube and replaced that with -8 line
 

Kunz111

Member
Jan 16, 2016
113
2
18
What's the thread spec on fuel temp sensor?
I replaced Stock Supply lines with -8 from tank to filter and -6 from filter to cp3.. return line is -6 from or disconnect to tank
Also remove or supply crossover tube and replaced that with -8 line

Thread pitch is 12x1.5.