Zenith Carb

Discussion in 'Import Vehicles' started by Bartolucci, Jul 9, 2017.

  1. Bartolucci

    Bartolucci Full Member

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    I inherited a 61 Nash Metropolitan and had the 1bbl Zenith carb rebuilt. It wasn't idling right so I attempted to adjust it by ear. Running the idle/mix screw all the way in causes the idle to increase, running it out causes it to stumble some, but only to a point. Seems that I could run the screw all the way out of the carb! It's been a while since I've played with an old carb like this, but I thought one adjusts by running the screw in until the idle gets rough. This appears backwards.

    It's a 1500 cc Austin motor with unknown miles, but seems 'tired' to me.

    The car is in beautiful condition, but the engine is loud, rattly, and really slow. It sounds like an old motor boat.

    TIA

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  2. kev2

    kev2 wrench

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    OK Zenith caused the OLD memory cells to try and fire zenith = old Harley Davidson's and yes their idle setting was backward, opening caused more air (vacuum) to bleed off the idle system. So it would lean out opening

    Suggestion - do you know WHICH carb is picture correct?
    model 28 228 pictured
     

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  3. Bartolucci

    Bartolucci Full Member

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    Hope these pics help... TIA.[​IMG][​IMG][​IMG]

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  4. kev2

    kev2 wrench

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    I do not have anything on that carb..... the attachment may be helpful if nothing else location of carb numbers, and maybe that will get more info.
     

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  5. Bartolucci

    Bartolucci Full Member

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    Thanks Kev2!

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