Cummins 8.3 ISC Caps issue

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Deanfitz27, Oct 2, 2025.

  1. Nss

    Nss Light Load Member

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  2. Nss

    Nss Light Load Member

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  3. Nss

    Nss Light Load Member

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    Here you go, sorry about the doubled pic, it said error, so i sent 2x
     
  4. Deanfitz27

    Deanfitz27 Bobtail Member

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    Thanks that's very helpful. According to my code 329 12 7 , i have a over pumping issue. Funny its only when cold. I will have to run a few tests. Perhaps could be a bad injector