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Federal Models

  1. Disconnect vacuum hose at deceleration valve and reconnect it to throttle plate opener on intake manifold.
  2. Warm engine to normal operating temperature. Increase engine speed to 2500 RPM, then let it decrease gradually.
  3. Check fast idle speed being held by throttle plate opener. It should be 1800-2000 RPM. If not, adjust by turning screw in end of throttle plate opener.
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