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Factory air mixture screw setting?

Discussion in 'XJ Technical Chat' started by BhamXJ550, May 22, 2020.

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  1. BhamXJ550

    BhamXJ550 Member

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    Is there a recommended air mixture screw setting for my 82 xj550 maxim? I have the stock pipes, jets and air filter. I’m also at sea level as well. I currently have them 2 1/4 turns out
     
  2. k-moe

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

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    2 1/2 turns out is baseline, and you will ritchen a bit from there to dial it in.
     
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  3. hogfiddles

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

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    And the 550 is usually more finicky than the 650/750, so you may end up as far out as 4 turns or more
     

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