B4000 SE Cab Plus 4WD V6-4.0L OHV (1997)
Evaporative Check Valve: Testing and Inspection
Inspection
1. Verify that air flows through the valve from port A when the valve is held as shown in the figure.
2. Verify that no air flows through the valve from port A when the valve is held as shown in the figure.
3. If not as specified, replace the fuel vapor valve.
