![]() |
|
Duramax 6600 Welcome to the Internet's first Duramax 6600 diesel discussion forum for the LB7, LLY, LBZ, LMM, LML, LGH & L5P RPO code engines. Tips on performance, fuel economy, troubleshooting and more. |
![]() |
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
![]()
I am asking for suggestions on how to free up the 1/2" quick disconnect fuel supply line to filter. It is stuck. Could it be a seal(s) and if so might lubrication such as WD-40 help? The return line disconnected correctly. It had sliding movement. I am using a "disconnect" tool from Lisle. Thanks in advance.
+++ 2003 GMC 2500 HD Duramax 175K Stock +++ 1. Instrument cluster replaced with GM and then rebuilt by Module Master after the GM replacement failed. 2. Lower body corrosion fixed; bed liner applied on skirt. 3. Light "white" smoke during idle presumably unburned fuel. No increase in oil level obvious. Overall a reliable truck. Good starter cold or hot. 18-mpg overall (75% Highway) lightly loaded. The injectors are the only disappointment. I hope to replace and have talked to Kennedy. I continue to be preplexed by the LB7 injector design / failure and the supposed filtration issues. |
#2
|
||||
|
||||
![]()
Is this fuel supply line quick-disconnect sorta near/beneath the brake booster?
|
#3
|
|||
|
|||
![]() Quote:
__________________
Kennedy Diesel-owner More than just a salesman-I use and test the products that I sell on a daily basis! Superflow Lie Detector in house 2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help 2005 Chev K3500SRW D/A CC Long LT(SOLD) 2007 Chev K2500 Classic EC Short LT (Sold) 2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later. 2016 GMC K3500SRW D/A CC short LTZ Custom tuning in house using EFI Live tuning software! |
![]() |
Thread Tools | |
Display Modes | |
|
|