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Very lean, white plug

Discussion in 'XJ Technical Chat' started by khblue, May 20, 2008.

  1. khblue

    khblue Member

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    Thought I'd keep separate threads !

    The lean carb also has the same fuel level as the other three. Possible reasons for 'too lean' that occur to me are :-
    - blocked idle jet
    - blocked main jet
    - diaphragm not seated correctly so needle valve not lifting

    Any other [ossibles ?

    (How about someone experienced posting a sticky with reasons for too rich or too lean ? I'm guessing each list would be about 20 items long, which seems manageable.)
     
    khblue, May 20, 2008
    #1
  2. martinfan30

    martinfan30 Member

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    Carb boots cracked, butterfly shaft seals leak....
     
    martinfan30, May 20, 2008
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  3. samsr

    samsr Member

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    Easiest reason for lean mixture across all carbs would be no air filter in the air box.
     
    samsr, May 20, 2008
    #3

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