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Distributor Vacuum Vent Valve: Testing

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  1. Connect an external vacuum source of 10 in. Hg to the "VAC" side (side with I.D. number) of the Distributor Vacuum Vent Valve.
  2. Connect a 24 inch section of vacuum hose to a vacuum gauge and connect the other end of hose to the other port of vent valve.
    Fig 1: Distributor Vacuum Vent Valve
    G09343115Courtesy of FORD MOTOR CO.
  3. Apply vacuum and check the time (in seconds) it takes for gauge to read from 0 to 8 in. Hg with a constant 10 in. Hg vacuum source. Minimum and maximum time for vent valve to read 8 in. Hg should be as follows:
    Distributor Vacuum Vent Valve Specifications

      Time In Seconds
    Valve Code No. Minimum Maximum
    20 16 36.8
    40 28 67.6
    5 7 13.7
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