Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Surging at idle

Discussion in 'The Garage' started by lochenjons, Apr 23, 2007.

  1. lochenjons

    lochenjons 1/2 ton status

    Joined:
    Sep 13, 2006
    Posts:
    682
    Likes Received:
    0
    Location:
    Santa Cruz, CA
    When my truck idles it will randomly surge forward a little. I searched :waytogo: and it looks like most likely a vacuum leak. Well I sprayed carb cleaner around the carb and the idle never changed. I just put headers on not that long ago, so could that have something to do with some of the smog crap no longer hooked up? And I changed the plug wires and I might have switched the lengths of a couple :doah:. Could that do it? Anything else?
     
  2. lochenjons

    lochenjons 1/2 ton status

    Joined:
    Sep 13, 2006
    Posts:
    682
    Likes Received:
    0
    Location:
    Santa Cruz, CA
    Anyone?
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

    Joined:
    Dec 13, 2000
    Posts:
    26,982
    Likes Received:
    191
    Location:
    Roy WA
    A vaccuum leak can be anywhere you've got a gasket to manifold vaccuum

    No broken vacuum lines, no open vacuum lines, etc.
     
  4. Mudstud

    Mudstud 1/2 ton status

    Joined:
    May 29, 2001
    Posts:
    1,472
    Likes Received:
    1
    Location:
    Memphis, TN
    Spray it around the intake- front and back sides. Around the base of the carb. Along any vacuum lines you have. Under your arm pits. If any of these make the engine rev up thats where your leak is. Squirt some in the PCV valve too and shake it up good.
     

Share This Page