Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Fast air leak to 60 psi, then slow

Discussion in 'Experienced Truckers' Advice' started by RepoweredRookie, Apr 25, 2023.

Page 1 of 2
  1. Apr 25, 2023 #1
    RepoweredRookie

    RepoweredRookie Light Load Member

    158
    134
    Apr 16, 2019
    0
    Hey Guys,

    Been spraying soapy water and listening with a section of garden hose (lol) for air leaks but can’t find any.

    What would cause the truck to lose air FAST until 60 psi, then lose air slowly? Both Trailer and Parking knobs pulled out.

    1999 Freightliner Century 12.7 S60

    Thanks for any help!
     
    RepoweredRookie, Apr 25, 2023
    RepoweredRookie, Apr 25, 2023
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Apr 25, 2023 #2
    snowwy

    snowwy Road Train Member

    20,599
    13,322
    Jul 6, 2009
    0
    How fast is fast?

    Small vacuum or fuel line might pick the sound up better. Something like 3/8 or 5/16
     
    snowwy, Apr 25, 2023
    snowwy, Apr 25, 2023
    #2
    RepoweredRookie Thanks this.
  4. Apr 25, 2023 #3
    bad-luck

    bad-luck Road Train Member

    3,390
    6,267
    Nov 16, 2013
    Baltimore, Maryland
    0
    Check the purge valve on the bottom of the air dryer
     
    bad-luck, Apr 25, 2023
    bad-luck, Apr 25, 2023
    #3
    RepoweredRookie, D.Tibbitt and silverspur Thank this.
  5. Apr 25, 2023 #4
    xsetra

    xsetra Road Train Member

    5,179
    7,117
    Aug 21, 2011
    0
    The hose from compressor to Air Dryer?

     
    xsetra, Apr 25, 2023
    xsetra, Apr 25, 2023
    #4
    RepoweredRookie and silverspur Thank this.
  7. Apr 25, 2023 #5
    RepoweredRookie

    RepoweredRookie Light Load Member

    158
    134
    Apr 16, 2019
    0
    About 5-6 psi an hour. I will try a smaller tube or buy stethoscope from HF.
     
    RepoweredRookie, Apr 25, 2023
    RepoweredRookie, Apr 25, 2023
    #5
  8. Apr 25, 2023 #6
    lester

    lester Midwest's #1 Feed Hauler

    2,941
    7,973
    Jan 2, 2012
    NW, Iowa
    0
    5-6 psi per HOUR is not FAST. And may be somewhat hard to find.
     
    lester, Apr 25, 2023
    lester, Apr 25, 2023
    #6
    Hammer166, RepoweredRookie, Big Road Skateboard and 1 other person Thank this.
  9. Apr 25, 2023 #7
    RepoweredRookie

    RepoweredRookie Light Load Member

    158
    134
    Apr 16, 2019
    0
    Thanks guys, I didn’t even think about those lones. I will definitely go over the dryer and lines today. Thanks for the ideas!
     
    RepoweredRookie, Apr 25, 2023
    RepoweredRookie, Apr 25, 2023
    #7
  10. Apr 25, 2023 #8
    Magoo1968

    Magoo1968 Road Train Member

    2,054
    5,475
    Mar 18, 2021
    St Malo mb
    0
    Air bags on cab or suspension.. they don’t get suppled air around 60psi . Do you have deflated bags in the morning??
     
    Magoo1968, Apr 25, 2023
    Magoo1968, Apr 25, 2023
    #8
    RepoweredRookie, Big Road Skateboard, Bean Jr. and 3 others Thank this.
  11. Apr 25, 2023 #9
    Mnmover99

    Mnmover99 Light Load Member

    248
    344
    Oct 22, 2022
    0
    As the bags inflate, it changes the spot where the leak is.
     
    Mnmover99, Apr 25, 2023
    Mnmover99, Apr 25, 2023
    #9
    RepoweredRookie, Bean Jr., Ffx95 and 2 others Thank this.
  12. Apr 25, 2023 #10
    snowwy

    snowwy Road Train Member

    20,599
    13,322
    Jul 6, 2009
    0
    5-6 is really nothing to worry about.

    I once drove a brand new FL and new flatbed trailer.

    The truck still lost air.
     
    snowwy, Apr 25, 2023
    snowwy, Apr 25, 2023
    #10
    RepoweredRookie and Big Road Skateboard Thank this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 1 of 2