1. Welcome To GMTruckClub.com!

    The #1 Chevy Truck Forum Online
    Online since 2004, we are the #1 Chevy Truck & SUV forum and user community. If you have any questions about your Chevy or GMC Truck, SUV or Crossover, or just want to connect with other GM owners and enthusiasts around the world, you've found the best place on the internet to do that.

    Join Today ~ It's Free
    Registering is Free and Easy! Hope to see you on the forums soon!

1993 gmc with a 305motor at 4x4 rough idlestartup

Discussion in 'Performance & Fuel' started by wegnerconstruction, Sep 15, 2013.

  1. wegnerconstruction

    wegnerconstruction New Member

    i have changed pretty much every sensor on the motor and it still runs rough at first start up and blows black smoke for about a minute and then run some what fine but service light comes on then.any ideas out there

Share This Page