Navajo 4WD V6-4.0L OHV (1991)
Types Of Vacuum Delay Valves
Vacuum Delay & Vacuum Retard Delay Valves
NOTE: VDVs are Black on one side and colored on the other. VRDVs are White on one side and colored on the other.
Connect a hand vacuum pump, to one side of the delay valve. When vacuum is applied to a VDV or a VRDV, vacuum should hold on one side only, then
visibly decrease slowly. If air flows freely through the valve, connect vacuum pump to other port.
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.
Connect a hand vacuum pump, to one side of the delay valve.
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
Orange
1.5-2.5
Brown
2-5
White
4-12
Yellow
5-14