Evaporative Emissions System: Testing and Inspection

FUEL VAPOR LINES, FUEL TANK AND TANK CAP INSPECTION
1. VISUALLY INSPECT LINES AND CONNECTIONS
- Look for loose 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
- Blow low pressure compressed air (4.71 kPa, 48 kgf/ sq.cm, 0.68 psi), into port A and check that air flows without resistance from the other ports.
- Blow low pressure compressed air 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 kgf/sq.cm, 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














TVV INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE TVV FROM WATER INLET HOUSING
- Disconnect the following hoses:
(1) Vacuum hose (from charcoal canister)
(2) Vacuum hose (from throttle body)
- Remove the TVV.
3. INSPECT TVV OPERATION
- Cool the TVV to below 35 °C (95°F) with cool water.
- Check that air does not flow from the upper port to lower port.
- Heat the TVV to above 54 °C (129°F) with hot water.
- Check that air flows from the upper port to lower port.
- If operation is not as specified, replace the TVV.
4. REINSTALL TVV
- Apply adhesive to 2 or 3 threads of the TVV, and install it.

Adhesive:
Part No. 08S33-00070, THREE BOND 1324 or equivalent

Torque: 18 N.m (184 kgf.cm, 13 ft.lbf)

- Reconnect 2 vacuum hoses.
5. REFILL WITH ENGINE COOLANT