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Fast Idle Problem

Discussion in 'The Garage' started by rusty79beast, Jan 20, 2004.

  1. rusty79beast

    rusty79beast Registered Member

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    Location:
    Houghton, MI
    Today everything was running fine, when all of a sudden I put it in park, and it is idling probably around 2000-2500 rpm. It is a 86 carbed 305 blazer. It is really cold up here, around 0 degrees, not sure if that matters. Throttle is not stuck, any suggestions??
    Thanks,
    Paul /forums/images/graemlins/confused.gif
    Oh yeah, engine was warm, and choke was working properly...
     
  2. stallion85

    stallion85 1/2 ton status

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    Does your carb have a choke on it? Was the engine already hot? It could be the choke or you might have to adjust your carb due to the temp change??
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    Choke *was* working properly, or IS working properly?

    Those electric chokes can and do fail, you checked when it was at high idle that the choke blade was fully open?
     
  4. R72K5

    R72K5 Banned

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    choke not kicking down,

    you will need carb cleanr in can, and also some kind of thin lubricant oil

    with carb cleaner clean the **** out of the linkage parts on pass side of carb for the choke step and stuff, let that dry, and then spray really think good oil of some kind on all of that, then hold throttle open by hand and keep it there and with left hand move the choke lever deal up and down throughout its travel to make sure it moves free and if engie si cold then that it springs back up and shuts choke, but not super tight

    now fire her up cold and adjust your fast idle(not idles speed screw on driver side of carb!) around 1000rpm or wher eit sounds right for warming up when cold cold


    all done
     
  5. rusty79beast

    rusty79beast Registered Member

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    When the engine was warm, the choke blade was in the fully opened position like it should be, hope that helps you guys
     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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    Probably sticky linkage then. Like R72K5 said.
     

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