Adjusting idle mixture on a Carter RBS 1bbl?

Discussion in 'Technical' started by Doward, Nov 21, 2002.

  1. Doward

    Doward Member

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    '74 Maverick, with a Carter RBS 1bbl on it... is there any way to lean out the idle mixture on it? It's running a bit too rich for my tastes...
     
    Doward, Nov 21, 2002
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  2. expjames91

    expjames91 Member

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    adjust the choke, adjust the idle/fuel screw towards the front passenger side of the carb... adjust the idle selonoid..
     
    expjames91, Nov 21, 2002
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  3. jeremy

    jeremy I build t5's

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    adjusting the idle screws clockwise will lean it out, counterclockwise will make it rich. A good rule of thumb is to turn the screw all the way in, then out about 3 turns, and adjust from there. If you have a vaccuum gauge, you can perfect it by hooking it up to manifold, and adjusting the screw until you get peak rpms.
     
    jeremy, Nov 21, 2002
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  4. Doward

    Doward Member

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    And the idle screw is.... the one slanted, behind the fuel bowl?
     
    Doward, Nov 22, 2002
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  5. jeremy

    jeremy I build t5's

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    do you have a pic?? I am used to the v8 carb, but usually it is in the front of the carb on the bottom under the float bowl
     
    jeremy, Nov 22, 2002
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  6. Doward

    Doward Member

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    Ok, here's your pic... is this the idle mixture screw? and would it best be adjusted after total warm up?

    I think this is it... it's the only other screw (the idle stop is the other) I can find...
     

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    Doward, Nov 24, 2002
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  7. Doward

    Doward Member

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    Is that the idle mixture screw?
     
    Doward, Nov 25, 2002
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  8. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

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    Yes, it is.
     
    Craig Selvey, Nov 25, 2002
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