idles wide open

Discussion in 'General Chevy & GM Tech Questions' started by T TOP TOM, Aug 14, 2008.

  1. T TOP TOM

    T TOP TOM New Member

    On my 1994 4 cylinder S10 pickup it backfired thru the top end yesterday and when it starts it runs wide open and won't idle down. Any idea what I should look for? I couldn't see anything wrong looking under the hood. The butterfly is in closed position and works with the throttle cable ok. Thanks for any input you can give me. :neutral:
  2. Davandy

    Davandy Moderator 5+ Years ROTM Winner 1000 Posts

    I think you blew a gasket somewhere :neutral:
  3. John W

    John W Rockstar 100 Posts

    Likely an intake gasket.
  4. voodoo 350

    voodoo 350 New Member

    take some carb cleaner and spray it (with the tube) at different areas around the intake. if the idle changes you have a leak. you can pinpoint it with the carb cleaner. it is either a vaccumm hose or an intake gasket.

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