Refueling Vapor Recovery System: Testing and Inspection

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

WARNING: When conducting inspections below, be sure to observe the following:
- Put a "CAUTION: FLAMMABLE" sign in workshop.
- Do not smoke while servicing fuel system. Keep open flames and sparks away from work area.
- Be sure to furnish the workshop with a CO2 fire extinguisher.

CAUTION:
- Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-proof container and put lid on securely.
- Release fuel pressure from fuel line. Refer to "FUEL PRESSURE RELEASE".
- Disconnect battery ground cable.

- Always replace O-ring when the fuel gauge retainer is removed.
- Do not kink or twist hose and tube when they are installed.
- Do not tighten hose and clamps excessively to avoid damaging hoses.
- After installation, run engine and check for fuel leaks at connection.
- Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.

Diagnostic Procedure

Step 1-5:

SYMPTOM: FUEL ODOR FROM EVAP CANISTER IS STRONG.

Step 1-6:

Step 7-10:

SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG WHILE REFUELING.