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  1. #1

    Default white sulfur smelling smoke from under the hood

    Hello, I have a 97 Chevy Silverado 5.7 ...sometimes when I try to start it it just shudders and a white smoke comes from under the hood and then I can start it. Any ideas??? thanks in advance---Bryan

  2. #2
    Master Mechanic SupplySgt's Avatar
    Join Date
    Feb 2010
    Middle TN, displaced Okie


    Check your idler pulleys. Make sure they're not locking up and rubbing away your serpentine belt. After that, check your wiring. Any shorts will start burning away the sheathing for the wires in small increments. Not sure what color smoke it would put up but white smoke isn't out of the question, and it doesn't smell that great when it happens. Those are the first two things that I would look at.
    93 Suburban (Southern Slayer): TBI 350, 4L60E
    73 Z28 Camaro: L82, TKO 600


    "...Death smiles at us all, all a man can do is smile back..."

  3. #3

  4. #4


    When you say it "shudders", do you mean it turns over, starts for a second and dies? It it back firing? Does it Just turn over? Given the info we have now, I agree with Supplysgt, I would check wiring. Especially near the starter.

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors,
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

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