Impreza Coupe FWD F4-1820cc 1.8L SOHC (1995)
Evaporative Check Valve: Testing and Inspection
Two-Way Valve
1. Blow air into the port on the fuel tank side. Some air should pass through to the other port with considerable resistance.
2. Blow air into the port on the canister side. Air should pass through to the other port with very little resistance. Replace valve if it fails above tests.
