5.9L Only
- Using a vacuum pump, apply a constant 10 in. Hg of vacuum to Black side of delay valve. Connect one end of a 24 inch length section of vacuum hose to vacuum gauge, and the other end to colored side of delay valve.
- Observe the time in seconds for gauge pointer to move from zero (0) to 8 in. Hg. The minimum and maximum time for each valve type to reach 8 in. Hg is listed in FORWARD DELAY VALVE SPECIFICATIONS . Replace delay valve if valve is not within specifications, otherwise install valve in its original position.
NOTE:
When testing delay valve, prevent dirt or oil from entering valve.
FORWARD DELAY VALVE SPECIFICATIONS
| Color of Valve | Time in Seconds |
|---|---|
| Black/Gray | 8-12 |
| Black/Brown | 16-24 |
| Black/White | 50-77 |
| Black/Yellow | 80-120 |
| Black/Purple | 3.2-4.8 |
| Black/Green | 160-240 |
| Black/Orange | 1.5-2.5 |