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Air jets mix up

Discussion in 'XJ Modifications' started by daviexj650, Apr 28, 2011.

  1. daviexj650

    daviexj650 Member

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    Not sure if i did this right , the bike now bogs down and runs rich
     
  2. KrS14

    KrS14 Active Member

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    You very well could have, they're kinda backwards from fuel jets.

    The pilot (#190?) is the BIG one and the main is the small (#85) one.
     
  3. daviexj650

    daviexj650 Member

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    So the big jet goes torward the air cleaner and the little jet torward the motor ?
    Thank you
    Dave
     
  4. -Azrael-

    -Azrael- Member

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  5. daviexj650

    daviexj650 Member

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    Thank you I mixed the jets up , recleaned the carb and going to put them back on this weekend!!
    Thank you for your help :)
     
  6. cutlass79500

    cutlass79500 Well-Known Member

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    i am not sure if they are talking about the same jet. I do not believe you can mix them up. The pilot is small the main is big. unless your talking about the ones above the the main and pilot
     
  7. -Azrael-

    -Azrael- Member

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    The air jets are physically the same short of the bore (jet size I.D)
    and they are backwards to the fuel jets in that the smaller air jet is the main, and the larger is the pilot.

    Cheers
    Dave
     
  8. daviexj650

    daviexj650 Member

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    YeahI def mixed this up
     
  9. -Azrael-

    -Azrael- Member

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    I did too on my first re-assembly... haha
     
  10. daviexj650

    daviexj650 Member

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    lol I just so happy that everyone can help me out , I think If I didn't figure it out by this weeekend I would have part the bike out ;)

    Thank you for your help
     
  11. -Azrael-

    -Azrael- Member

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    We've all been there (I actually am right now :? ) but the wizards on this site can get you through and back on the windy road.
     
  12. daviexj650

    daviexj650 Member

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    thats awesome to know :) Im sure I am going to need the help again
     
  13. daviexj650

    daviexj650 Member

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    k so im back with an issue
    Carbs are clean and reinstalled now when I set the idle with the thumb idle screw and it sounds great as soon I give it gas the rpms race sky high then im back to adj the thumb screw and then the idle is way to low :(

    Any ideas
     
  14. daviexj650

    daviexj650 Member

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    I can't figure this one out :(
     
  15. KrS14

    KrS14 Active Member

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    Could be an air leak. Use a propane torch (unlit) and hover around your carbs.. if the rpm's rise, you have a leak.

    Carbs being WAY out of sync will do the exact same thing.
     
  16. daviexj650

    daviexj650 Member

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    hummmm good thinking should i take off the air filters?
     
  17. daviexj650

    daviexj650 Member

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    what if i spar the carbs with carb cleaner will it do the same thing
     
  18. daviexj650

    daviexj650 Member

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    sorry i mean spray carb cleaner
     
  19. seaguy

    seaguy Member

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    Depends on the type. some burn and some don't. spray a puddle and see if it will light with a match/bic. WD40 will burn but gets the engine sticky. I try to use a sprayer with the red pipe on it so I can be more certain where the air leak actually is. If it's around the butterfly shafy seals then it all comes back off to replace them. If it's around the rubbers somewhere then some black rtv will do the job.
     
  20. waldo

    waldo Member

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    Davie have you adjusted the valves yet? Trying to tune out the carbs without the valves being right has caused many people hours of frustration. It might seem intimidating when you read through the manual but is one of the easiest maintenance jobs to do, and takes minimal tools.
     
  21. daviexj650

    daviexj650 Member

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    Which valves do you mean? Sorry I am knew to this. Before I cleaned out the carbs they were filthy but when warming up it would run decent.
     
  22. daviexj650

    daviexj650 Member

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    I just checked the engine compression and everything is fine. I don't know what to do
     
  23. waldo

    waldo Member

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    What were your compression readings. I a talking the engines cylinder valves
     
  24. daviexj650

    daviexj650 Member

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    cool thanks
     
  25. daviexj650

    daviexj650 Member

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    I am not sure what the numbers where , I had someone I know check it for me. Think I should try the mixing screws on the top of the carbs? I think the bike shop set them 11/2 turns out

    I just dont know what to do
     
  26. daviexj650

    daviexj650 Member

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    k so still nothing :(gurrr time to sell or part it out
     
  27. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    2.5 - 2.75 turns out from soft seat then colortune.

    Check your float levels again.

    Dave
     
  28. daviexj650

    daviexj650 Member

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    ok cool i readjusted the turns. Now I can ride the bike with a little choke on then after 10 mins I can turn the choke off and its fine , well a little low idle at stop lights
     

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