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1 & 4 leaner than 3 & 4

Discussion in 'XJ Technical Chat' started by fender512, Apr 4, 2011.

  1. fender512

    fender512 Member

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    Took apart and cleaned and bench synced my carbs over the winter...replaced boot gaskets and check for vacum leaks.....everything looks good.

    1&4 are running slightly leaner (light gray on the plugs) than 3&4 (nice and tanish brown on the plugs).

    I need to build a manometer and synch my carbs but will synching fix the issue?

    Other than this problem the bike runs great I just don't want to kill any valves.
     
    fender512, Apr 4, 2011
    #1
  2. fender512

    fender512 Member

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    I mean 1&4 leaner than 2&3....oops!
     
    fender512, Apr 4, 2011
    #2
  3. cutlass79500

    cutlass79500 Well-Known Member

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    could be as simple an air screw adjustment. Just keep an eye on then if they turn white stop riding and fix it
     
    cutlass79500, Apr 4, 2011
    #3
  4. fender512

    fender512 Member

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    Still having an issue with Cylider #1 being lean. Agian #2 and #3 look great and after adjusting and setting all the mixture screws 2 1/2 turns from seated cylider #4 looks good no but still no luck with #1.

    I am assuming air is being intoduced somewhere but cannot find where it is coming from. Could a bad plunger in the carb cause this problem?

    Please help because Sun/Mon are suppose to be beautiful and I want to ride without destroying my bike.
     
    fender512, Apr 7, 2011
    #4
  5. iwingameover

    iwingameover Active Member

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    2 1/2 turns is a starting point not the final setting. If you are getting good color on 3 then they are good.

    make small adjustments to the pilot screw until you get it to brown up.
     
    iwingameover, Apr 7, 2011
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  6. fender512

    fender512 Member

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    Is it screw in or screw out to enrich?
     
    fender512, Apr 7, 2011
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  7. iwingameover

    iwingameover Active Member

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    out = rich
     
    iwingameover, Apr 7, 2011
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  8. fender512

    fender512 Member

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    Thank you Sir.......I will give it a try.
     
    fender512, Apr 7, 2011
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  9. fender512

    fender512 Member

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    Looks like 2 1/2 turns worked...Rode to work today and when I got home and checked the plugs they look perfect! I will keep a close eye on the plugs. Thanks for the help!
     
    fender512, Apr 7, 2011
    #9

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