Air bags deflate overnight

Discussion in 'Kenworth Forum' started by TankerYanker79, Apr 16, 2018.

  1. TankerYanker79

    TankerYanker79 Bobtail Member

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    Apr 16, 2018
    Bristol, Vermont
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    My 2016 W900 just started leaking down overnight on both the suspension bags and cab bags. Talked to couple other guys having similar issues. No audible leaks or breaks. Will build and hold air and a load fine. Was thinking it could be Pressure protection valve off the tank. Any suggestions? Thanks
     
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  3. DUNE-T

    DUNE-T Road Train Member

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    Detroit, MI
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    On my truck it was dash valve. Could not find the problem for months
     
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  4. pushbroom

    pushbroom Road Train Member

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    Soapy water in a spray bottle and go hard. Only way to actually find it
     
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  5. Red Rocket 1964

    Red Rocket 1964 Light Load Member

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    Jan 31, 2013
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    air ride cab bags is where i would start
     
  6. baha

    baha Road Train Member

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    ga
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    Also ck air valve on ride hi.
     
  7. WitchingHour

    WitchingHour Road Train Member

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    Broomfield, CO
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    Check the fittings. A lot of those use the push in fittings, which aren't the best for longevity.
     
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