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Thread: 64 wildcat quadrajet issues

  1. #1
    Join Date
    Aug 2017
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    Three fork
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    64 wildcat quadrajet issues

    The vacuum line broke almost to the manifold but if I hold the secondary closed tight it runs if I let go it dies! Can't see any fuel spray in the primary either, I adjusted the float a touch a few days ago could that be the no spray issue? And should it still run with the secondary wide open just off the primary?

  2. #2
    The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
    Vladimir Lenin

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  3. #3
    Join Date
    Sep 1999
    Location
    Dbl Oak,TX
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    745
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    25
    The vacuum leak is fixed now? That will cause problems unless it is fixed first.

    At idle the throttle valves are closed on the primary and secondary. The fuel-air mixture is delivered down below the throttle valves at idle and would not be visible. Even at higher speeds the mixture is nearly invisible. If it runs at all, fuel and air are getting to the cylinders.

    When the accelerator pedal is punched, the carb will spray a shot of liquid fuel into the primary throats. That momentary action is visible at the top of the carb even if engine is not running.

    There is an idle circuit in the primary as well as the secondary side. So the secondary throat cannot be sealed off for regular operation.

    While driving, the engine runs off just the primary side most of the time. The secondary barrels only kick in during fast acceleration, high speed operation, or heavy load conditions. As the accelerator is depressed gradually you can see the point at which the carb linkage starts to open the secondary throttle valves.
    What has been, can be again. (Bob Wills, 1942)

  4. #4
    A '64 Wildcat did NOT come out until '66 on 425's unless you added a '66 Q-Jet manifold & carb.
    Tom Telesco
    Classic and Muscle Automotive
    12 Cook St.
    Norwalk, CT 06853-1601
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    NailHead Mini-Starters '53-'66
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