Refueling Vapor Recovery System: Testing and Inspection

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 and make the internal pressure in the fuel tank 4 kPa (41 gf/sq.cm, 0.58 psi).
c. Check that the internal pressure of the fuel tank can be held 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 filler 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. Plug the cap to the air drain hose.
c. Pressurize 4 kPa (41 gf/sq.cm, 0.58 psi) to the purge port and check that there is ventilation through the EVAP line hose.

HINT: In the condition that the fuel is full, as the float value 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 cut off valve and fill check valve.

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