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Vacuum Amplifier

  1. Start engine and warm to normal operating temperature. Disconnect vacuum hose from bottom of amplifier and connect vacuum gauge at this port. Disconnect vacuum amplifier hose from carburetor.
  2. Depress accelerator pedal several times, then allow engine to return to idle. Vacuum gauge should read 1.6-2.4 in. Hg.
  3. Connect amplifier hose back to carburetor. Increase engine speed to 3500 RPM. Gauge should now read 3.2-3.8 in. Hg. If amplifier does not give readings indicated, it should be replaced.
    Fig 1: EGR System for 2.3L Engines (Federal)
    G09315604Courtesy of FORD MOTOR CO.
    Fig 2: EGR System for 2.3L Engines (Calif.)
    G09315605Courtesy of FORD MOTOR CO.
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