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How to unblock idle jet

Discussion in 'Fuel System & Electrics' started by deepburn13, Aug 11, 2014.

  1. deepburn13

    deepburn13 Member

    Messages:
    257
    Location:
    Adelaide
    Hey all,

    Can anyone tell me how to unblock a blocked carby idle jet?

    Cheers,
    Scott.
     
  2. Surf77

    Surf77 Member

    Messages:
    93
    Location:
    Newcastle
    I got a tip once and it worked great for me on a gas lantern jet. remove the jet from the carb. Heat it up till it is red hot, then drop it into a cup of water. Whatever is stuck in the jet gets spat out.
     
  3. Barry

    Barry Well-Known Member

    Messages:
    6,182
    Location:
    Abbotsford NSW
    Just blow it. Usually did it for me.
    Sometimes it is a fibre that needs to be pulled out.
     
  4. spearsy

    spearsy Active Member

    Messages:
    1,110
    Location:
    sydney
    Get an air gun and blow out with compressed air.
     
  5. deepburn13

    deepburn13 Member

    Messages:
    257
    Location:
    Adelaide
    Thanks all. Ive got a compressor that i borrowed for spraypainting that should do the job. Do i blow the air into where the cut off solenoid screws in? Or have i got the wrong hole? ;p
     
  6. roverbay

    roverbay Active Member

    Messages:
    864
    Location:
    nambour
    G'day all. my self taught bush mechanic dad use to change a plug lead & cause backfire through the carby seemed to work on the Vauxhall but they never caught fire
    ernie
     
  7. saabman

    saabman Well-Known Member

    Messages:
    4,888
    Location:
    Goulburn
    If you are talking about the tube that feeds fuel from the fuel bowl to the idle circuit on the left hand carb. I had mine block up once and needed to pull the carby apart tried blowing air through with no luck unded up using a strand of wire from a wire brush and pushed the blockage out with that - took a fair bit of effort.

    I know you should not use wires to clean jets as you can make them bigger and bugger up the metering but figured it would not matter too much on the idle circuit as the fuel is metered by the needle valve anyway.
     
  8. grumble

    grumble Well-Known Member

    Messages:
    1,384
    Location:
    Taree
    Some interesting fixes,some of which I wouldn't recommend but saabman's often works unless the gunk stays inside the jet,Spraying carby cleaner into the jet from the inner end often washes the gunk out and then open the idle screw and give it a blow through there too and then find where the gunk came from.
     
  9. saabman

    saabman Well-Known Member

    Messages:
    4,888
    Location:
    Goulburn
    Yes I had both screws out and blew it out with compressed air and flushed with carby cleaner after I forced the crud out.
     
  10. deepburn13

    deepburn13 Member

    Messages:
    257
    Location:
    Adelaide
    Awesome info guys. Cheers!
     

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