Fuel Tank Ventilation, Checking

Fuel Tank Ventilation, Checking

Special tools, testers and auxiliary items required

• Hand Vacuum Pump (VAS 6213)

• Adapter for K-jetronic Test Device (V.A.G 1318/20-1)

Conditions

• The ignition must be turned off.

Sequence

- Remove the vent line - 2 -. Press the release button.






- Connect the (VAS 6213) - 1 - to ventilation line - 2 - for the Evaporative Emission (EVAP) canister as illustrated.






- Operate the (VAS 6213) several times. No vacuum should be built up.

Vacuum

- Check the breather hole at the EVAP canister => [ (Item 8) Vent Connection ] Description and Operation for contamination, clean if necessary.

No Vacuum

- Seal the breather hole - arrow - closed and operate the vacuum pump several times again. Vacuum must build up.






No Vacuum

- Replace EVAP canister.