Truck is "belching" white smoke.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by gekko1323, Jun 5, 2023.

  1. gekko1323

    gekko1323 Road Train Member

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    Good afternoon folks. Every once in awhile, my truck starts to growl or rumble from deep within her bowels, shake a little, then "belches" white/light gray smoke out of her stacks. She's been doing this since I got her. Sometimes she'll go weeks without doing it, other times (like yesterday) she'll do it several times a day.

    I have yet to add a drop of oil in her (besides regular changes at 13,000 miles). I get a sample done by the people in Ft. Wayne every change, and they come back stellar. Report says I can go to 16,000 between changes if I want. I also had her overheads done a month ago.

    Can this have anything to do with the fact that she's "neutered"? It's a DD S-60, 14L, DDEC VI.

    Looking forward to your insights.
     
  2. Lazer

    Lazer Road Train Member

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    Is the engine using any coolant?
     
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  3. 77fib77

    77fib77 Road Train Member

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    Injector? Idk. It could be the harness too. Mine does the same thing once in three days or once in two weeks. Never figured it out. DD15.
     
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  4. gekko1323

    gekko1323 Road Train Member

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    No. I've NEVER had to add coolant since I bought her.
     
  5. gekko1323

    gekko1323 Road Train Member

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    Yours rumbles and shakes also before belching?
     
  6. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    The DDEC VI was plagued with injector issues ever since its inception. Basically the same injector as a Volvo D13, and we all know that story. I am obviously only guessing at this and taking into account that your "tune" and equipment mods are correct.
     
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  7. gekko1323

    gekko1323 Road Train Member

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    That would probably explain the weak power on any little hill? I thought doing the overheads might have solved this but no.
     
  8. Last Call

    Last Call Road Train Member

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    This ^^^^^ I would maybe think you might a injector cup that might be leaking also
     
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  9. gekko1323

    gekko1323 Road Train Member

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    I guess the injectors are next on the list to get checked out then.
     
  10. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    Injector cups are easy to change when injectors are removed. Cups are stainless steel, so weak point is cup o rings.They just "unscrew" from head. You will need proper cup removal tool (amazon under $100) If ordering, make sure you get correct one. DDEC V used similar tool. Just different enough to not work on DDEC VI.
     
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