Topaz V6-182 3.0L (1992)
Vacuum Delay Valve: Testing and Inspection
Types Of Vacuum Delay Valves
Vacuum Delay & Vacuum Retard Delay Valves
NOTE: Vacuum Delay Valves (VDVs) are Black on one side and colored on the other. Vacuum Retard Delay Valves (VRDVs) are White on one side
and colored on the other.
1. Connect a hand vacuum pump, to one side of the delay valve.
2. When vacuum is applied to a VDV or a VRDV, vacuum should hold on one side only, then visibly decrease slowly.
Vacuum Delay Valves
Vacuum Retard Delay Valves
Black & Color
Time (seconds)
White & Color
Gold
<
.35
>
Gold
Gray
<
1-4
>
Gray
Brown
<
2-5
>
Brown
White
<
4-12
4-15
>
Pink
Yellow
<
5-14
>
Yellow
Blue
<
7-16
Green
<
9-20
>
Green
Lt. Green
<
13-24
Red
<
15-28 >
Red
60
>
Purple
Two-Way Vacuum Delay Valves
This type of delay valve is one solid color.
1. Connect a hand vacuum pump, to one side of the delay valve.
2. When vacuum is applied to the valve, vacuum should hold on both sides before visibly decreasing. There is no free flow direction in this valve.
Color
Time (seconds)
Pink
4-6
Blue
2.75-4.25