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idle speed high

Discussion in 'XJ Technical Chat' started by j13jcg, Jul 7, 2012.

  1. j13jcg

    j13jcg Member

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    hi all . my xj700 is adling at 3500 rmp and will not go down if adjusting the idle screw , any ideas thanks john
     
    j13jcg, Jul 7, 2012
    #1
  2. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Sure--

    Time for carb cleaning and service, valve clearance check and carb sync.

    Check for obvious vacuum leaks (petcock vac line, vacuum spigot caps, etc.)

    Any mods?
     
    bigfitz52, Jul 7, 2012
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  3. j13jcg

    j13jcg Member

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    i have checked the valve clearence and replaced any that was out . cleaned the carbs and set the floats with a clear tube , was syncing the carbs all morning but cant get the rev down
     
    j13jcg, Jul 7, 2012
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  4. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Depending on the accuracy of your initial bench sync, either you're still way out of sync;

    or you have a vacuum leak somewhere.

    I'll ask again: Intake or exhaust mods?
     
    bigfitz52, Jul 7, 2012
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  5. j13jcg

    j13jcg Member

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    no leaks so must be carb sync . here we go again
     
    j13jcg, Jul 7, 2012
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  6. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    bigfitz52, Jul 7, 2012
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  7. adrian1

    adrian1 Active Member

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    Hang up somewhere on throttle cable?
     
    adrian1, Jul 7, 2012
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  8. j13jcg

    j13jcg Member

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    hi . only mods a k/n filter everything else standard
     
    j13jcg, Jul 7, 2012
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  9. j13jcg

    j13jcg Member

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    cant get 1 and 2 to level out . wen i turn the screw one way they get further appart an the carbtune bet the rev goes down . turn it the other way and the rev goes higher and higher . starting to think its time to sell
     
    j13jcg, Jul 7, 2012
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  10. j13jcg

    j13jcg Member

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    help help help please
     
    j13jcg, Jul 7, 2012
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  11. trickedout420

    trickedout420 Member

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    are your band clamps holding any of the blades open i had this problem...is the adjuster on your throttle cable right PO had mine all the way turned in and when i cleaned the carbs and started it up it rev'd up to 9 grand and stayed there all i did was adjust it down until the idle screw picked it up
     
    trickedout420, Jul 8, 2012
    #11

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