GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1

    Default Idling rough....

    I have a 1991 GMC K1500. Its a 350 tbi. I just replaced the fuel pressure line/return line from the fuel filter to the throttle body. (new filter as well) The truck now runs terrible, and the exhaust smells like gas. not exhaust. The truck shakes really hard while idling, and dies when i put it in gear. going down the road, the truck sounds like it is misfiiring, and shakes really bad. none of this was happening until i changed those lines. and help would be appreciated! thank you!

  2. #2

    Default

    Are you sure the fuel line is sealed? Do you have the right filter?

  3. #3
    Jr. Mechanic
    Join Date
    Dec 2008
    Location
    Gettysburg, Pa.
    Posts
    103

    Default Idling rough

    Are you sure you didn't put any strain on plug wires while working around in there and possibly pull one or two loose at the distributor?

Similar Threads

  1. Egine runs rough while idling
    By Bear945 in forum General Chevy & GM Tech Questions
    Replies: 4
    Last: 09-12-2009, 03:21 PM
  2. Rough idling in Park or Neutral
    By willbradfan in forum GM Powertrain
    Replies: 8
    Last: 05-14-2009, 02:23 PM
  3. URGENT: 2002 Suburban Z71 Idling Rough and Surging
    By perfect777 in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 6
    Last: 01-14-2009, 09:33 PM
  4. 2005 tahoe idling rough
    By zach91 in forum GM Powertrain
    Replies: 4
    Last: 01-25-2008, 03:39 PM
  5. 92 Burban w/350 idling alittle rough
    By jbird in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 4
    Last: 01-23-2008, 08:39 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •