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quadro- junk carburator problems

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by scrappyk5, Oct 28, 2002.

  1. scrappyk5

    scrappyk5 1/2 ton status

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    i have a 1984 k5 with the quadra-jet carb. for the past three mornings , the choke is not opening up after warm-up.
    i have gone in and flipped the linkage myself to open it
    so i can go. this morning , no matter if i flipped it ,it
    would close again.
    the wire is hooked up and i its not all gummed up on the
    linkage , actually i think the carb is only a couple years
    old. is the problem in the choke , or is it in the thing
    (whatever its called ) that opens up the butterfly ?
    should i mess with it , or just hook up a manual choke
    cable ?
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Does the wire actually have 12 volts to it? Without 12 volts the choke coil will not warm up and the choke will never open.

    Rene
     
  3. 4x4Freak

    4x4Freak 1/2 ton status

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    There is a fuse for the choke. It should be up towards the top of the fuse block.
     
  4. wrathORC

    wrathORC 1/2 ton status

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    Make sure it's getting power while the motor is running. It's activated by an oil pressure switch. I believe there is a 30amp (maybe 25?) fuse towards the top of the fuse block.

    Be careful of the clip that hooks the wire to the choke. It is prone to breaking. It's a $5 connector and hard to find.

    Does your choke light stay on even though it's got power to it? If so, it's time for a new choke. All an electric choke is made of is a bimetal strip. They burn out pretty regularly. If it's not freezing cold outside it'll be hot enough to burn your fingers in a minute or so if you take it out of the carb. If it's still riveted in then the choke has probably never been replaced.
     
  5. scrappyk5

    scrappyk5 1/2 ton status

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    the light for the choke goes off as soon as the engine
    has started. yes , the choke is still riveted. the wire
    is hooked up . i am going to check it out wednesday afternoon which is my evening off from my parttime job .
    is there anything else i should look for ?
     

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