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Davco 382 Fuel Filter having a lot of tiny bubbles.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by F1EXPRESS, Nov 28, 2022.

  1. Nov 28, 2022 #1
    F1EXPRESS

    F1EXPRESS Bobtail Member

    5
    2
    Apr 22, 2013
    0
    Hello guys,
    Today noticed a lot of tiny bubbles in the glass tank, and white smoke in the morning with a cold start then everything goes back to normal but not the bubbles on my 04 Columbia Series 60 14L Detroit diesel. Replaced the fuel filter, and also replaced the glass with another one from another truck but the problem is the same, any help would be appreciated.
     
    F1EXPRESS, Nov 28, 2022
    F1EXPRESS, Nov 28, 2022
    #1 + Quote Reply
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  3. Nov 29, 2022 #2
    Opendeckin

    Opendeckin Medium Load Member

    326
    800
    May 20, 2018
    0
    put new O rings on top and bottom and be sure to clean the mating surfaces and lube the O rings before installing them. If that doesn't do it you've got air getting in the lines between the fuel tanks and the davco unit.
     
    Last edited: Nov 29, 2022
    Opendeckin, Nov 29, 2022
    Opendeckin, Nov 29, 2022
    #2 + Quote Reply
    Siinman and Hammer166 Thank this.
  4. Nov 29, 2022 #3
    F1EXPRESS

    F1EXPRESS Bobtail Member

    5
    2
    Apr 22, 2013
    0
    Hello Opendeckin and thanks for replying,
    If you are talking about the o rings that come with the new fuel filter I already replaced them, and the glass itself.
     
    F1EXPRESS, Nov 29, 2022
    F1EXPRESS, Nov 29, 2022
    #3 + Quote Reply
  5. Nov 29, 2022 #4
    F1EXPRESS

    F1EXPRESS Bobtail Member

    5
    2
    Apr 22, 2013
    0
    Just fixed the problem, check valve on the DAVCO filter was bad, replaced it and there is ZERO bubbles.
     
    F1EXPRESS, Nov 29, 2022
    F1EXPRESS, Nov 29, 2022
    #4 + Quote Reply
    Siinman and Opendeckin Thank this.
  7. Nov 29, 2022 #5
    Opendeckin

    Opendeckin Medium Load Member

    326
    800
    May 20, 2018
    0
    Okay I was gonna ask about that, but I actually just had that problem and it fills the bowl up to the top before the filter is actually full and it all drains back to the tank when you break the seal on top. You didn't mention any of those symptoms so I was leaning more towards the O rings not sealing right.

    Glad you got it figured though.
     
    Opendeckin, Nov 29, 2022
    Opendeckin, Nov 29, 2022
    #5 + Quote Reply
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