Stock fuel filter screw on cover

Discussion in '5.9L Engine and Transmissions (2003-2007)' started by B.G. Smith, Oct 27, 2022.

  1. B.G. Smith

    06 3500, anyone ever had the fuel filter cover unscrew enough to cause it to leak?
     
    B.G. Smith , Oct 27, 2022
    #1

  2. Ozymandias TDR MEMBER

    No
     
    Ozymandias , Oct 27, 2022
    #2
    B.G. Smith likes this.

  3. Darkbloodmon TDR MEMBER

    Never
     
    Darkbloodmon , Oct 28, 2022
    #3
    B.G. Smith likes this.

  4. Topzide TDR MEMBER

    Sounds like o-ring got nicked on the filter change. If cap was installed and tightened, it shouldn't back off at all. The o-ring not only seals but helps like a lock washer. Hope you can find out what caused it to loosen up on you.
     
    Topzide , Oct 28, 2022
    #4
    B.G. Smith likes this.

  5. bcbender TDR MEMBER

    To add to that comment, it is possible to crack the resin cover if over tightened.
     
    bcbender , Oct 28, 2022
    #5
    B.G. Smith and Darkbloodmon like this.

  6. B.G. Smith

    As fine as the threads are I doubted it possible? It did start to leak and has about 10,000 miles on filter. I must have turned it 3/4 of a turn till it got tight. Haven't driven truck since. I am going to go ahead and change the filter and look at the cover real close. Thanks for the replies.
     
    B.G. Smith , Oct 28, 2022
    #6

  7. B.G. Smith

    Well, I changed the filter, put cap on and tightened as tight I thought was good and I could still see the "O" ring, tightened some more, looks good. Guess I was fortunate it failed at home. (It didn't fail, I just failed to tighten it right the last time.) The filter housing is kind of like the low side port on the AC as far as access. With a little more engineering they both could have been made inaccessible.
     
    B.G. Smith , Oct 28, 2022
    #7
    brucejohnson, Topzide, Darkbloodmon and 1 other person like this.

  8. User113 TDR MEMBER

    Use a torque wrench. 25 ft. lbs.
     
    User113 , Nov 1, 2022
    #8
    B.G. Smith likes this.

  9. bcbender TDR MEMBER

    I noticed the new 6.7 has the torque spec moulded onto the lid...
     
    bcbender , Nov 1, 2022
    #9
    Darkbloodmon and B.G. Smith like this.

  10. Ozymandias TDR MEMBER

    I never ever torque that lid, just snug and it's fine.
     
    Ozymandias , Nov 1, 2022
    #10
    Sidewayzz1969, 06 Dodge, Darkbloodmon and 1 other person like this.
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