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Spark Delay Valve System: Testing
- 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).
- Connect a vacuum gauge to the colored side of SDV (Mono Delay Valve) or the white side (all other delay valves).
- 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.
- 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 |