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EPISODE #2 - Choke plate stuck closed/no high idle ******UPDATE******

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Can Can, Jan 13, 2002.

  1. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    WELL, BELIEVE IT OR NOT............... HERE'S THE UPDATE:

    After going through a week of hell trying to figure this stupid hard start out, a mechnic friend of mine told me about a press release issued by the local Shell refinery about a batch of bad gas that was delivered to most stations in our area over the last 2 weeks. Apparently this gas has led to numerous injector and fuel pump repairs that Shell ended up being responsible for.

    To make a long story short, I decided to check my fuel filters out thinking that maybe the bad gas had somehow fouled them. I replaced them about 5000 miles ago and figured that they *couldn't* have been the preoblem since they were so new. Well, once the new ones were installed the truck ran like a bat out of hell!!!!!

    I'm hoping that this wasn't just a coincidence, but if it was I'm sure you guys will be the first to know[​IMG]!!!!!

    Thanks for all your help, guys!!

    END OF UPDATE...............



    Here the second episode of my carb crap. I'm staring to get REALLY FRUSTRATED!!!!!!

    Up until yesterday, my 84 was having a hard time starting. The choke plate was closing, and and the high idle cam was engaging. For some reason, the truck would stall out after a few seconds and I would have to prime the carb with raw gas(about 1/4 cup worth) to get it to catch.

    Yesterday, the same thing happened, but it wouldn't catch. I can't get the choke plate to release and the high idle cam won't engage now!!!!

    WTF IS GOING ON???!!!!<img src="http://coloradok5.com/forums/images/icons/tongue.gif">

    I need some help guys.......


    <font color=red>DIGGING AND DIGGING AND DIGGING</font color=red><P ID="edit"><FONT class="small">Edited by CanmoreK5 on 01/13/02 01:51 PM.</FONT></P>
     
  2. Cavalry

    Cavalry 1/2 ton status

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    Re: EPISODE #2 - Choke plate stuck closed/no high idle

    Check the vac pull for the choke. (back right top of the carb) If the linkage is too tight then it will pull the choke open as soon as vac builds all the time
    Make sure everything is working by manually moving the choke linkage. Oil is a bad idea on linkages in cold weather as it gums up.

    DRIVE IT LIKE ITS YOUR BOSSES!!!
    Luke
    84 K5
     
  3. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    Re: EPISODE #2 - Choke plate stuck closed/no high idle

    My high idle is controlled by a little cam that locks in place between the electric choke housing and the carb body itself. For some reason, I cant get it to catch- it just slops back and forth.

    The choke plate linkage is all on the passenger side of my carb, as well. Looks like it's connected to a little round steel disc(which seems to have a vac diaaphragm in it) that's bracketed to the rear passenger side of the carb. The secondary linkage is hooked into the system there too.





    <font color=red>DIGGING AND DIGGING AND DIGGING</font color=red>
     
  4. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Re: EPISODE #2 - Choke plate stuck closed/no high idle

    Sounds like a bad choke element. Sometimes the spring can break. Mark the dial so you know where your starting from. turn it clock wise. This will richen it up and hold the choke longer as well as close it if it isn't already. If the element is working this should cure the problem. if the spring is broken it may not close the choke at all.

    Women dig dents and flat paint!
    coloradok5.com/gallery/Grim
    75 Jimmy, Dollar
    Grim-Reaper
     
  5. Cavalry

    Cavalry 1/2 ton status

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    Re: EPISODE #2 - Choke plate stuck closed/no high idle

    Make sure you are getting voltage to the choke too. Should be in the 12ish range

    DRIVE IT LIKE ITS YOUR BOSSES!!!
    Luke
    84 K5
     

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