Temporary fuel supply line fix - inexpensive and easy - Page 2 - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 11-20-2012, 01:38 PM   eBay Motors  #11 (permalink)
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I'm gonna be checking my fuel lines when I get home now...
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Old 11-20-2012, 02:26 PM   eBay Motors  #12 (permalink)
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Not sure where Marlow is. Im near the lakes in central NH
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Old 11-20-2012, 02:27 PM   eBay Motors  #13 (permalink)
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So what size rubber line did you use?
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Old 11-20-2012, 02:58 PM   eBay Motors  #14 (permalink)
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Quote:
Originally Posted by ieetgluu View Post
So what size rubber line did you use?

I had to replace both the fuel supply and the return lines on mine and I've had no issues with rubber fuel lines collapsing whether I have my lift pump running or not. The supply side is 1/2" ID the whole length except at the fuel sender (you'll need to use 5/8" line there to slip onto the fuel sender). The return line is all 3/8" the entire way (1/2" to go over the fuel sender). Once you get it all down, you'll be shocked how corroded everything is and glad you don't need to worry about it anymore (just be sure to insulate any areas of fuel line which may rub against anything). Be sure to get good quality fuel hose too (especially if you run any biodiesel at all).

These may help with the fuel sender area:
http://www.kennedydiesel.com/docs/Ba...stallation.pdf
http://www.kennedydiesel.com/docs/Fu...ifications.pdf
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Old 11-20-2012, 03:46 PM   eBay Motors  #15 (permalink)
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Oh Ive been under there and it seems one line is rusted most of the way, and at every black plastic line holder its nasty too. Thanks for the info guys. I almost bought factory lines too.
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Old 11-20-2012, 04:09 PM   eBay Motors  #16 (permalink)
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You may find this thread helpful as well:
LLY: leaking fuel cooler - Diesel Place : Chevrolet and GMC Diesel Truck Forums
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2005 Silverado EC/SB, LLY, 4WD, EFI DSP5 V2 (Idaho Rob at ATP), Edge CTS w/ EGT probe, LML Exhaust Manifold, PPE shimmed FPRV, Banks LBZ air cleaner, Profab intake, LBZ Turbo Mouthpiece, Kennedy twin lift pumps w/ megafilter, Corsa 304 SS Exhaust, Mike L tranny cooler, EXAXT Steering System, Redhead Power Steering Box w/ Amsoil PS fluid, Green Torsion Keys, Allison Deep Pan w/ Suncoast Filterlock and Transynd ATF, Bilstein 5100's (Norcal), Cognito UCA's, 17" NBS alloy rims, 265/70R17 Michelin LTX M/S2's, Pioneer AVH-P3200BT, CubbyCam Backup Camera, Pop & Lock Power Tailgate Lock, Extang Solid Fold Tonneau Cover, Tekonsha P3 Brake controller, Alphatherm AT-38OD Washer Fluid Heater
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Old 11-20-2012, 07:16 PM   eBay Motors  #17 (permalink)
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Awesome, more good stuff to read. You say a good quality fuel hose, what would you recommend?
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Old 11-20-2012, 08:09 PM   eBay Motors  #18 (permalink)
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I found some SAE30R9 hose on ebay. Bio-D safe type of stuff ~$7.50/ft for 1/2"
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04.5 4x4 ~133k miles
DE 4", 5100s, LBZ MP, S&B LBZ air, KoryWillis Go-go Juice, Insight CTS, ADII, 8' Fisher



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Old 11-21-2012, 03:24 AM   eBay Motors  #19 (permalink)
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Quote:
Originally Posted by ieetgluu View Post
Awesome, more good stuff to read. You say a good quality fuel hose, what would you recommend?

If you need to source hose, just give John Kennedy a call and he can get whatever size you need.
May also be a good time for a lift pump if you don't already have one.
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2005 Silverado EC/SB, LLY, 4WD, EFI DSP5 V2 (Idaho Rob at ATP), Edge CTS w/ EGT probe, LML Exhaust Manifold, PPE shimmed FPRV, Banks LBZ air cleaner, Profab intake, LBZ Turbo Mouthpiece, Kennedy twin lift pumps w/ megafilter, Corsa 304 SS Exhaust, Mike L tranny cooler, EXAXT Steering System, Redhead Power Steering Box w/ Amsoil PS fluid, Green Torsion Keys, Allison Deep Pan w/ Suncoast Filterlock and Transynd ATF, Bilstein 5100's (Norcal), Cognito UCA's, 17" NBS alloy rims, 265/70R17 Michelin LTX M/S2's, Pioneer AVH-P3200BT, CubbyCam Backup Camera, Pop & Lock Power Tailgate Lock, Extang Solid Fold Tonneau Cover, Tekonsha P3 Brake controller, Alphatherm AT-38OD Washer Fluid Heater
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Old 11-21-2012, 07:49 AM   eBay Motors  #20 (permalink)
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Quote:
Originally Posted by MTL_Dmax View Post
If you need to source hose, just give John Kennedy a call and he can get whatever size you need.
May also be a good time for a lift pump if you don't already have one.
I dont, but I want one. Not sure which one, I was thinking Airdog. Then there's that $$$$ thing....
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04.5 4x4 ~133k miles
DE 4", 5100s, LBZ MP, S&B LBZ air, KoryWillis Go-go Juice, Insight CTS, ADII, 8' Fisher



Dirtymax this, Dirtymax that...
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