Loosing air

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Strikerhawk01, Apr 29, 2022.

  1. Strikerhawk01

    Strikerhawk01 Bobtail Member

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    Apr 29, 2022
    0
    15 prostar. Cummins isx15 425. Loosing air while parked at night. I can have full pressure in tanks and set the brakes on both truck and trailer. Shut engine off and wishing 2 hours it's beeping at me. Overnight pressure in both tanks will go as low as 30 pounds. It does this with or without a trailer. And I'll be ###### if I can hear or find a leak anywhere. I did change the compressor ( for other reasons) and I changed the brake valve on the firewall in hopes that would solve the problem which it did not
     
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  3. kemosabi49

    kemosabi49 Trucker Forum STAFF Staff Member

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    Jan 13, 2013
    SW Arkansas
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    You need to get a squirt bottle with some soapy water in it and spray your air lines and connectors. Especially at connectors.
     
  4. Mike250rs

    Mike250rs Heavy Load Member

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    7,081
    Sep 24, 2019
    Raleigh, NC
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    Sounds kinda like an air bag or one of the 362538 air line connectors
     
    Kyle G. Thanks this.
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