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can someone settle an argument for me

Discussion in 'Hangout Lounge' started by Rastacia, Jun 25, 2012.

  1. Rastacia

    Rastacia Member

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    I say carb mixture screws turn out to richen as per factory pro website cv tuning.

    Mechanic ( race one at that and clever guy BUT) he says if the mixture screw is at the back of the carb its turn out to richen , but if its cylinder side of the carb ( like on our XJ's) then its turn in to richen.


    this has thrown me as I have read similar to both arguments on the web .
    I know my ZX6 mixture screw is airbox side and its out to richen . now I am running round in circles , help
     
    Rastacia, Jun 25, 2012
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  2. dmccoach

    dmccoach Member

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    Out = richer - because the screw controls rate of gasoline flow through the pilot circuit...
     
    dmccoach, Jun 25, 2012
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  3. Bushy

    Bushy Active Member

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    Th carbs on yours and mine are OUT to richen th mix. Dunno about th ones at th back of th carb ..
     
    Bushy, Jun 25, 2012
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  4. KrS14

    KrS14 Active Member

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    As far as i know, if it's on the air side, it's an air valve for the pilot circuit. (out is more air in is more fuel - less air)

    If it's on the cylinder side, like ours, it's out to richen, and in to lean it out.
     
    KrS14, Jun 25, 2012
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  5. Ground-Hugger

    Ground-Hugger Member

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    My 83 XJ750K out to enrich mixture, in to lean the mixture.
     
    Ground-Hugger, Jun 25, 2012
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  6. MiGhost

    MiGhost Well-Known Member

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    It makes no difference which side it is on. It is simply a metering screw that adjust the mixture either before, or after the fuel has been vaporized. Out will increase/richen the mixture. In will decrease/lean the mixture.

    Ghost
     
    MiGhost, Jun 26, 2012
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  7. MiCarl

    MiCarl Active Member

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    Generally speaking the Mechanic is wrong. In MOST cases a screw at the back is out=lean, at the front of carb out=rich.
     
    MiCarl, Jun 26, 2012
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