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Thread: Supply Line to Filter will NOT Quick Disconnect

  1. #1
    Join Date
    Sep 2001
    Posts
    17

    Default Supply Line to Filter will NOT Quick Disconnect

    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. #2
    Join Date
    Feb 2000
    Location
    Montana
    Posts
    11,382

    Arrow

    Quote Originally Posted by lars1 View Post
    I am asking for suggestions on how to free up the 1/2" quick disconnect fuel supply line to filter. It is stuck...
    Is this fuel supply line quick-disconnect sorta near/beneath the brake booster?

  3. #3
    Join Date
    Mar 2000
    Location
    Loyal WI US
    Posts
    10,792

    Default

    Quote Originally Posted by lars1 View Post
    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.
    Probably best to send a picture. There is no quick connect at the filter. Only at the LH side of engine near booster, under truck by fuel cooler, and at the tank sender itself.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
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    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
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