subaru Workshop Repair Guides

Subaru Workshop Service and Repair Manuals

Sensors and Switches - Fuel Delivery and Air Induction > < Main Relay (Computer/Fuel System)|Locations|Page 2163
Page 1
background image

Two-Way 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.

Sensors and Switches - Fuel Delivery and Air Induction > < Main Relay (Computer/Fuel System)|Locations|Page 2163