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No Def consumption

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by el_mavi, Jan 6, 2023.

  1. Jan 6, 2023 #1
    el_mavi

    el_mavi Bobtail Member

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    Sep 1, 2022
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    C55F3436-737D-4130-B58C-D31141402F1F.jpeg Hi guys, I have a 2022 International LT, Isx 15, not using Def since last trip and getting a derate. 3738 and 3548 fault codes active. No air or def getting to nozzle on air solenoid test and pump override test. Can hear the click on solenoid test and air pressure is getting to the big squared module behind def tank (where all hoses meet). Small leak on one of the hoses. Clogged line probably? Don’t know where to start.
     
    el_mavi, Jan 6, 2023
    el_mavi, Jan 6, 2023
    #1
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  3. Jan 6, 2023 #2
    gentleroger

    gentleroger Road Train Member

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    Start with "warranty". If you start mucking about its probably going to bite you.
     
    gentleroger, Jan 6, 2023
    gentleroger, Jan 6, 2023
    #2
    ducnut, Concorde and Smellfunny Thank this.
  4. Jan 6, 2023 #3
    Smellfunny

    Smellfunny Road Train Member

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    I had a guy that bought 3 or 4 new trucks and had issues from the start. He brought them to me and I was like dude take that thing back to the dealer. You PAID for a new truck and it is under warranty. He took a couple back but one that ran on propane that had a huge coolant leak on the cylinder head he let some other guy work on it. No way I would pay for someone to work on my truck that is new and under warranty.
     
    Smellfunny, Jan 6, 2023
    Smellfunny, Jan 6, 2023
    #3
    gentleroger, ducnut and Concorde Thank this.
  5. Jan 6, 2023 #4
    Concorde

    Concorde Road Train Member

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    Jun 29, 2016
    West Melbourne Florida
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    Fwiw..If you open the DEF filler cap and you hear a vacuum sound it’s a clogged vent and will give a derate warning.

    Been having this issue with my new truck…vent keeps clogging.
     
    Concorde, Jan 6, 2023
    Concorde, Jan 6, 2023
    #4
    gentleroger and ducnut Thank this.
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