Evaporative Emissions (EVAP) control system, servicing: Notes

WARNING: This page is about a different car, the 1999 Audi A8, 1998 Audi A8, and 1997 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The EVAP canister is located in the left-rear wheelhousing behind the wheelhousing liner.
When working on the EVAP canister the wheelhousing liner should be removed.

NOTE: The following list refers to items in Fig 1 .

From expansion tank
- 6 mm diameter
To engine
- 8 mm diameter
Vent line
- Line ends at vehicle floor
Evaporative Emissions (EVAP) canister
EVAP canister purge regulator valve
- Checking operation:
  See EVAPORATIVE EMISSIONS (EVAP) CANISTER PURGE REGULATOR VALVE, ELECTRICAL TESTING .
To connection between intake manifold and throttle body

Fig 1: Identifying Evaporative Emissions (EVAP) Control System Components