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Spark Delay Valve

  1. Set an external vacuum source to 10 in. Hg. Connect vacuum source to Black side of SDV (Mono Delay and 1975-76 Dual-Delay Valves) or colored side (all other delay valves).
  2. Connect a vacuum gauge to the colored side of SDV (Mono Delay and 1975-76 Dual-Fitting Valves) or the White side (all other delay valves).
  3. Apply vacuum to SDV. On 1975-76 dual-fitting valves, clamp off each fitting and test separately. Check the time it takes for gauge to read from 0 to 8 in. Hg while applying a constant 10 in. Hg vacuum supply.
  4. The minimum and maximum time for valve to reach 8 in. Hg vacuum should be as shown in following table:
    SPARK DELAY VALVE SPECIFICATIONS

    Application Color Code Time In Seconds Minimum Time In Seconds Maximum
    Mono Delay Valve
      1975-76
        Black/Gray 1.0 4.0
        Black/Brown 2.0 5.0
        Black/White 4.0 12.0
        Black/Yellow 6.0 14.0
        Black/Blue 7.0 16.0
        Black/Green 9.0 20.0
        Black/Orange 13.0 24.0
        Black/Red 15.0 28.0
      1977-79
        Black/Gray .6 1.6
        Black/Brown 1.0 3.0
        Black/White 3.0 9.0
        Black/Yellow 4.5 13.0
        Black/Blue 7.0 19.0
        Black/Green 8.0 26.0
        Black/Orange 11.5 38.0
        Black/Red 14.0 47.0
    Retard Delay Valve
      White/Pink 2.7 9.3
      White/Brown (1) 1.O 3.0
      White/Green (2) 8.0 26.0
      White/Yellow 4.5 13.2
      White/Orange 0.4 1.6
    Air Cleaner Delay Valve
      White/Red 14.0 47.2
      White/Blue 8.0 26.0
    Dual Delay Valve
      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
    (1) Between 2 and 5 seconds on 1975-76 models.
    (2) Between 9 and 20 seconds on 1975-76 models.
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