Fuel Tank Pressure Control Valve Inspection

Fuel Tank Pressure Control Valve Inspection

Tools Required
J23738-A Hand Vacuum Pump

1. Connect a length of hose to the port marked TANK on the fuel tank pressure control valve.




2. Blow hard into the hose. Air should pass slowly through to the side marked CAN of the fuel tank pressure control valve (1).
3. Remove the hose from the TANK side of the fuel tank pressure control valve.
4. Connect the hose to the CAN side of the fuel tank pressure control valve.




5. Blow easily into the hose. Air should pass through to the side marked TANK of the fuel tank pressure control valve (2).
6. Apply 15 inches of vacuum to the vacuum port of the fuel tank pressure control valve.
7. With vacuum applied, blow into the port marked TANK. Air should pass easily through to the side marked CAN of the fuel tank pressure control valve (3).
8. Replace the fuel tank pressure control valve if the valve fails any of the above checks. Refer to Fuel Tank Pressure Control Valve Replacement.