Evaporative Check Valve: Testing and Inspection

Overfill Limiter (Two-way Valve) Operation:

Procedure to test the Overfill Limiter (two-way valve) for proper operation:
1. Remove the overfill limiter mounting bolt.
2. Disconnect the vapor hoses, and then remove the overfill limiter.
3. Blow lightly into the inlet and the outlet. If air passes through after a slight resistance, then the valve is good.