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  1. #1

    Default 2001 duramax smoking

    Hi, my dad changed the injectors on his duramax and it still smokes after it warms up? When it is cold it does not smoke. He thinks it may be a pump issue, any thoughts? Thanks
    :great:Semper FI

    2008 Vortec 6.0 LT Z-71
    2500 HD "BIG BOY" Truck
    Stealth Grey Metallic
    Volant Cold Air Intake
    Line X Bed liner
    265 75 R16 Michelin LTX M/S2 ORWl
    Chrome step bars
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    3M clear shield hood protector
    Putco over sized boss locker side rails 2 1/2"
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  2. #2
    Legend

    Join Date
    Feb 2008
    Location
    Red Wing, Minnesota, United States
    Posts
    3,375

    Default

    I assume you mean black smoke from the tailpipe. Somehow it is running rich....
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

  3. #3
    Sr. Mechanic ChevyHD's Avatar
    Join Date
    Jan 2011
    Location
    Elberon, Iowa, United States
    Posts
    179

    Default

    Is it white or black smoke?
    Adam
    2004.5 CCSB Duramax
    Max Effort Tuning by Idaho Rob - Goerend Transmission - PCV ReRoute - EGR Blocked - Plugged Resonator - 5" Diamond Eye Turbo Back - Tie Rod Sleeves - All On Mod - Edge Insight CTS - Recon Taillights, Cab Lights, & 3rd Brake Light

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