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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
    Fog lights
    3M clear shield hood protector
    Putco over sized boss locker side rails 2 1/2"
    Truxedo Low Pro QT Tonneau Cover

  2. #2

    Join Date
    Feb 2008
    Red Wing, Minnesota, United States


    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

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


    Is it white or black smoke?
    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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