Fuel Tank Pressure Control Valve Inspection Tools Required
TOOLS REQUIREDJ 23738-A Hand Vacuum Pump
1. Connect a hose to the fuel tank side of the pressure control valve on the fuel tank.
2. Blow hard into the hose. Some air should pass through the valve from the fuel tank side to the canister side when blown hard.
3. Remove the hose from the fuel tank side, and connect the hose to the canister side of the pressure control valve.
4. Blow easily into the hose. Even lightly blown air should pass smoothly through the valve from the canister side to the fuel tank side.
5. Replace the pressure control valve if the valve fails any of the above checks.