Table of contents: EVAP Carbon Filter ↓ Fuel tank shut-off valve ↓ Fuel tank vacuum valve (built into…↓
EVAP Carbon Filter
Check the EVAP carbon canister as follows:
1. Plug the channel (B).
2. Blow air through channel (A).
Make sure that air flows freely through channel (C).
3. Remove your finger from the channel (B).
4. Apply vacuum to channel (B). Make sure there is vacuum in channels (A) and (C).
5. Seal channels (A) and (B).
6. Blow air through channel (C).
Make sure there are no air leaks.
Fuel tank shut-off valve
1. Blow air through the coupling on the fuel tank side.
There should be significant resistance and some air flow should be directed toward the EVAP filter.
2. Blow air through the coupling on the EVAP filter side.
Air must flow freely towards the fuel tank.
3. If there is a suspicion that the fuel shut-off valve is not working properly in points 1 and 2 above, replace it.
Fuel tank vacuum valve (built into the fuel filler cap)
1. Wipe the valve body.
2. Check the valve opening pressure and vacuum.
 |
 |
Pressure: 15.3-20.0 kPa (0.156-0.204 kg/cm²)
Vacuum: -6.0 to -3.4 kPa (from -0.061 to -0.035 kg/cm²)
3. If the pressure and vacuum are different from the standard, replace the fuel tank filler cap assembly.