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Q-Jet / Idle Question

Discussion in 'The Garage' started by gstuck3, Feb 1, 2007.

  1. gstuck3

    gstuck3 Registered Member

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    Twentynine Palms, CA
    When I crank my truck cold, morning or afternoon, She idles at about 600-650 rpm in park. After it comes up to operating temp it idles at about 900 rpm. Otherwise it runs good. Isn't that kinda backwards? Can the choke or high idle be 'backward' for lack of a beter term?Also, I know almost nothing about adjusting carbs. I have a 74 Jimmy, 350/350 carb has the spring choke.
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    Actually the fast idle setting (passenger side screw) is probably set too low. You can increase that by simply turning it until you get the desired cold idle speed.

    Since you don't know anything about these carbs, stay away from the two identical screws at the bottom front of the carb, those aren't the ones I'm talking about. :)
     
  3. AZ79K5Project

    AZ79K5Project 1/2 ton status

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