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Throtte Shaft Seals a necessity to change?

Discussion in 'XJ Technical Chat' started by arniepyeinthesky, Nov 27, 2017.

  1. arniepyeinthesky

    arniepyeinthesky New Member

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    Makes sense. There's 3 idle holes on the carbs though, half cover the middle one.

    Carb # 3 is the master. So first set that before setting others. What's the order if them again?

    When I tried starting it last, both holes were uncovered at idle.

    Will try this, see what difference it makes, and update.
     
  2. hogfiddles

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

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    For bench sync, I open til the middle hole on #3 is totally uncovered. (that way they are all open far enough that a different butterfly won't hold anything open or close too soon). Now ai adjust the remaining three to match. Doesn't matter what order. Once all match, I back the idle screw out til butterfly 3 covers half of the middle hole. Fine adjust the remaking three to match. Order doesn't matter. I snap them open a shut a few times, then check. Adjust if needed. install. Start up and do running sync.

    My preferred order -

    1. Balance 4 to 3
    2. Balance 1 and 2
    3. Balance 1/2 to 3/4
     
    k-moe likes this.
  3. Minimutly

    Minimutly Active Member

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    Priceless info, and so simple. It works too, better than a bodged running sync.
     
  4. k-moe

    k-moe Pie, Bacon, Burbon. Moderator Premium Member

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    There is one idle hole (the one closest to the slide, also the one the the idle mixture screw controls), one transition hole (the middle one), and one enrichment hole (the one furthest from the slide, which also acts as a transition hole).
     
    Last edited: Jun 14, 2018 at 9:43 AM
  5. Minimutly

    Minimutly Active Member

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    There you are, good explanation, and really, you should be able to see which order to adjust them - just work outwards from the master.
     

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