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Spark Delay Valve System: Testing

  1. Set an external vacuum source to 10 in. Hg, then connect vacuum source to black side of SDV (Mono Delay Valve) or colored side (all other delay valves).
  2. Connect a vacuum gauge to the colored side of SDV (Mono Delay Valve) or the white side (all other delay valves).
  3. Apply vacuum to SDV and check the time it takes for gauge to read from 0 to 8 in. Hg while applying a constant 10 in. Hg.
  4. The minimum and maximum time for valve to reach 8 in. Hg should be as shown in following table:
    Spark Delay Valve Specifications (Time In Seconds)

    Mono Delay Valve 
    Color Code Minimum Maximum
    Black/Gray .6 1.6
    Black/Brown 1.0 3.0
    Black/White 2.7 9.3
    Black/Yellow 4.5 13.2
    Black/Blue 6.8 18.8
    Black/Green 8.0 26.0
    Black/Orange 11.6 38.0
    Black/Red 14.0 47.2
    Retard Delay Valve 
    Color Code Minimum Maximum
    White/Pink 2.7 9.3
    White/Brown 1.0 3.0
    White/Green 8.0 26.0
    White/Yellow 4.5 13.2
    White/Orange 0.04 1.6
    White/Gray 0.6 1.6
    Air Cleaner Delay Valve 
    Color Code Minimum Maximum
    White/Red 14.0 47.2
    White/Blue 8.0 26.0
    Two-Way Delay Valve 
    Color Code Minimum Maximum
    Brown 1.0 3.0
    White 2.7 9.3
    Yellow 4.5 13.2
    Green 8.0 26.0
    Red 14.0 47.2
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