GM Truck Club
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

Thread: Rough Starting

  1. #1

    Default Rough Starting

    I have a buddy I put a new motor in his 94. 350 TBI. The truck runs great but if he parks it for any length of time, like over night, the gas will drain out of the line and he has to turn it over a bunch to get gas back to the throttle body. Once it starts it will run fine sometimes with less performance for a few minutes untill it warms up.
    My first thought was fuel pump but is there anything else that might cause the gas to seep out?

  2. #2
    Master Mechanic
    Join Date
    Apr 2009
    Owens Cross Roads, Alabama


    ive heard of this before.i dont know what would cause it but try turning the key to the on position (but dont crank it)and let the fuel pump prime the line.wait a few seconds then try cranking it.i may be way off but wouldnt hurt to try?sombody else may be able to help you out a little more
    2004 Silverado 4x4
    1986 K5 Blazer
    8" Superlift w/39.5 super swampers
    1992 GMC Jimmy "Blue Bomber"
    4.3L Vortec

  3. #3


    Fuel pressure regulator might be slowly losing the pressure. Try letting the pump prime the lines first before you try to start it. Good luck.
    Mike - OREGON

    2001 chevy silverado 4x4. 5.3L, 6 inch Fabtech lift, 35" Toyo MT's, 17" Weld Racing wheels, arma coating on rocker panels. No exhaust after cat. Pioneer stereo

Similar Threads

  1. starting
    By 2wheelmudder in forum GM Electrical Tech
    Replies: 3
    Last: 06-15-2010, 05:59 PM
  2. New Z71 and starting to mod
    By BrokeEnthusiast in forum Member Introductions
    Replies: 17
    Last: 10-27-2009, 11:29 AM
  3. starting problem
    By ChevyPrincess in forum General Chevy & GM Tech Questions
    Replies: 5
    Last: 06-01-2009, 11:21 PM
  4. Not starting
    By 1998burbon in forum General Chevy & GM Tech Questions
    Replies: 2
    Last: 03-24-2008, 12:57 AM
  5. Starting Problem
    By spayne67 in forum GM Powertrain
    Replies: 3
    Last: 01-08-2008, 05:50 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