Idle dd15 get on fuel, stumble white smoke

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 77fib77, Mar 29, 2020.

  1. Mandingo2022

    Mandingo2022 Bobtail Member

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    Jan 30, 2022
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    Hey . Did you figure out what was the problem I’m having the same issue.
     
    Rideandrepair Thanks this.
  2. 77fib77

    77fib77 Road Train Member

    10,922
    69,722
    Jul 7, 2010
    St Louis
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    I'm going to change out the egr controller and see if that works. I haven't done it yet, it's too cold to work on the truck.
     
    Rideandrepair Thanks this.
  3. Mandingo2022

    Mandingo2022 Bobtail Member

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    Jan 30, 2022
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    Ok thanks, mine is fully deleted since late last year, the winter before when my system was still on I didn’t have these problems, now the mechanic suggesting I change injectors but reading these threads that doesn’t help either from persons with the same problem.
     
    Oxbow, 77fib77 and Rideandrepair Thank this.
  4. Rideandrepair

    Rideandrepair Road Train Member

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    56,353
    Aug 8, 2015
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    For what it’s worth mines still doing it occasionally. I can make it do it, sometimes. After idling a while, taking off, holding the RPMs steady, it’ll do it. It was always around 900-1300 when I first noticed it.Thats due to shifting habits. I find I can make it sputter at almost any rpm, by holding the pedal steady. It’s as if the fuel filters are running out of fuel. Once I rev it up a bit, it goes away. They’re always full though, when I check or change them. I’m still thinking an air leak. Though my new injectors I put in came with one out of the box. Wish I’d made a note of which one it was, using the injector calibration code. It may be bad. I’m still looking for a bad fuel line, between my tanks and engine. Maybe a leaking fuel pump? It seeped fuel for a while after I put it on. Then it stopped. I did up the calibrations on the injectors. The highest # to 75, and the other 5 increased the same amount (difference). That may be the problem. Going to check fuel lines good, and set calibrations back to original suggested settings if I have to. Very well could be the problem according to DD literature.
     
    77fib77 Thanks this.
  5. KelvAcos

    KelvAcos Bobtail Member

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    Mar 11, 2013
    USA
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    I’m having the same issue since I deleted my DEF, replaced all injectors and nothing, it always happens when I’m in cold areas (30° or bellow). Will keep an eye on this thread, thank you so much.
     
    Rideandrepair and Oxbow Thank this.
  6. Newguy35

    Newguy35 Bobtail Member

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    Nov 7, 2018
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    Same issues def delete only when it's below 30 smh
     
    77fib77 and Rideandrepair Thank this.
  7. simongrewal

    simongrewal Light Load Member

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    Sep 17, 2017
    Indianapolis IN
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    My truck has same issue. Got it checked at 3 different mechanics. No one could find fault. Its stumble and blow white smoke when accelerates from idle speed. Its fully delete. Changed injectors too but nothing worked.
     
  8. crouger11

    crouger11 Bobtail Member

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    Oct 14, 2020
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  9. crouger11

    crouger11 Bobtail Member

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    Oct 14, 2020
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    Any updates anyone?
     
  10. crouger11

    crouger11 Bobtail Member

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    Oct 14, 2020
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    Ever get the problem solved?
     
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