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Truck loosing air, can't find where

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by OFilippov, Jan 20, 2024.

  1. Jan 20, 2024 #1
    OFilippov

    OFilippov Bobtail Member

    40
    13
    Oct 2, 2014
    0
    Hello everyone.
    I got 2016 Cascadia that loosing air when it's cold outside. Yes only when it's cold. I mean within an hour or so the tanks would be empty. I can't hear any air escaping anywhere. Sprayed bubble water everywhere I could think of - nothing. When it's hot outside it may take a day or two for it to loose some air. Any ideas what it could be?
     
    OFilippov, Jan 20, 2024
    OFilippov, Jan 20, 2024
    #1
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  3. Jan 23, 2024 #2
    062

    062 Road Train Member

    6,288
    33,828
    Oct 20, 2013
    0
    A big enough leak will push water away instead of bubbling.
    Check the base of your air bags.
    Under the radiator is a valve with a 5/8 line that’s bad for leaks.
     
    062, Jan 23, 2024
    062, Jan 23, 2024
    #2
    Oxbow Thanks this.
  4. Jan 23, 2024 #3
    6cuda6

    6cuda6 Light Load Member

    259
    176
    Oct 9, 2020
    0
    Dont forget to check the leveling valve as well .....
     
    6cuda6, Jan 23, 2024
    6cuda6, Jan 23, 2024
    #3
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