Refueling Vapor Recovery System: Testing and Inspection

INSPECT LINES AND CONNECTORS
Visually check for loose connections, sharp bends or damage.

INSPECT FUEL TANK FILLER PIPE
Visually check for deformation, cracks or fuel leakage.







INSPECT FUEL TANK CAP
Visually check if the cap and/or gasket are deformed or damaged.

If necessary, repair or replace the cap.







CHECK AIRTIGHTNESS IN FUEL TANK AND FILLER PIPE
a. Disconnect the EVAP line hose from the charcoal canister.
1. Pinch portion A.
2. Pull out the connector.

b. Pressurize the internal fuel tank at 4 kPa (41 gf/sq.cm, 0.58 Psi).
c. Check that the internal pressure of the fuel tank can be maintained for 1 minute.
d. Check the connected portions of each hose and pipe.
e. Check the installed parts on the fuel tank.

If there is no abnormality, replace the fuel tank and tiller pipe.

f. Reconnect the EVAP line hose to the charcoal canister.







INSPECT FUEL CUTOFF VALVE AND FILL CHECK VALVE
a. Disconnect the purge line hose and EVAP line hose from the charcoal canister.
b. Disconnect the drain hose from the charcoal canister and plug the cap to the drain port.
c. Pressurize the purge port at 4 kPa (41 gf/sq.cm, 0.58 psi) and check that it is ventilated through the EVAP line hose.

HINT: In the condition that the fuel is full, as the float valve of the fill check valve is closed and has no ventilation, it is necessary to check the fuel amount (volume).

d. Check if there is anything stuck in the vent line hose and EVAP line hose.

If there is nothing stuck in them, replace the fuel cutoff valve and fill check valve.

e. Reconnect the purge line hose and EVAP line hose to the charcoal canister.







CHECK AIR INLET LINE
a. Disconnect the air inlet line hose from the charcoal canister.
b. Check that there is ventilation in the air inlet line.
c. Reconnect the air inlet line hose to the charcoal canister.