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Losing DEF thru fill cap? Tank getting pressurized?

Discussion in 'Volvo Forum' started by simonsocm, Sep 25, 2020.

  1. Sep 25, 2020 #1
    simonsocm

    simonsocm Light Load Member

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    Aug 17, 2019
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    I've started to leak def from fil fill cap on the def tank. Is there some sort of check valve in the system that will not allow the tank to pressurize or is there any other fix for losing def from the cap?

    15 VNL 670 with a D13 btw
     
    simonsocm, Sep 25, 2020
    simonsocm, Sep 25, 2020
    #1
    '88K100 Thanks this.
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  3. Sep 25, 2020 #2
    '88K100

    '88K100 Road Train Member

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    Aug 23, 2020
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    Have not experienced that leak yet. Have had DEF pissing out line at exhaust, puking 25 litres every 700 kms
     
    '88K100, Sep 25, 2020
    '88K100, Sep 25, 2020
    #2
  4. Sep 25, 2020 #3
    simonsocm

    simonsocm Light Load Member

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    Aug 17, 2019
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    I spoke to a dealer shortly after this post. The parts guy had no idea either and said to try swapping caps first. So that's the current plan.
     
    simonsocm, Sep 25, 2020
    simonsocm, Sep 25, 2020
    #3
  5. Sep 25, 2020 #4
    Dakota1358

    Dakota1358 Medium Load Member

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    Jun 15, 2009
    Staunton,Va
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    Hmmm that's been happening to me lately.
     
    Dakota1358, Sep 25, 2020
    Dakota1358, Sep 25, 2020
    #4
  7. Oct 9, 2020 #5
    simonsocm

    simonsocm Light Load Member

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    Aug 17, 2019
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    It was the cap btw.
     
    simonsocm, Oct 9, 2020
    simonsocm, Oct 9, 2020
    #5
    86scotty Thanks this.
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