Thunderbird V8-302 5.0L HO (1992)
Vacuum Check Valve: Testing and Inspection
Vacuum Check Valve
1.
Apply 16" vacuum (54 kPa) to the colored (vacuum) side of the valve.
2.
Vacuum should remain above 15" (50.6 kPa) for at least 10 seconds.
3.
Vacuum applied to the other side of the valve should leak in a free flow manner.
