Evaporative Emissions System: Testing and Inspection

FUEL VAPOR LINES, FUEL TANK AND TANK CAP INSPECTION
1. VISUALLY INSPECT LINES AND CONNECTIONS



Look for loosen connections, sharp bends or damage.

2. VISUALLY INSPECT FUEL TANK
Look for deformation, cracks or fuel leakage.

3. VISUALLY INSPECT FUEL TANK CAP



Check if the cap and/or gasket are deformed or damaged.
If necessary, repair or replace the cap.

CHARCOAL CANISTER INSPECTION
1. REMOVE CHARCOAL CANISTER
2. REMOVE CAP FROM CHARCOAL CANISTER
3. VISUALLY INSPECT CHARCOAL CANISTER



- Look for cracks or damage.

4. INSPECT FOR CLOGGED FILTER AND STUCK CHECK VALVE



- Using low pressure compressed air 4.71 kPa (48 g/cm2, 0.68 psi), blow into port A and check that air flows without resistance from the other ports.



- Blow air 4.71 kPa (48 g/cm2, 0.68 psi) into port B and check that air does not flow from the other ports.
If a problem is found, replace the charcoal canister.

5. CLEAN FILTER IN CANISTER



- Clean the filter by blowing 294 kPa (3 kg/cm2, 43 psi) of compressed air into port A while holding port B closed.

NOTICE:
^ Do not attempt to wash the canister.
^ No activated carbon should come out.

6. REINSTALL CAP TO CHARCOAL CANISTER
7. REINSTALL CHARCOAL CANISTER