EVAP Canister And Leak Detection System Overview

Fig 1: Evap Canister And Leak Detection System Overview

Courtesy of AUDI OF AMERICA, LLC

1. Vent line
   • To fuel tank filler tube
   • To disconnect, press release button on connection piece
2. Vent line
   • To Evaporative Emission (EVAP) canister purge regulator valve 1 -N80-
   • To disconnect, press release button on connection piece
3. Clamp
   • Must be appropriate for the model type.
4. Connecting Hose
5. Nut
   • 4 Nm
6. Vacuum Line
   • To engine
7. Rubber Bushing
8. Bracket
9. Leak Detection Pump -V144-
   • Installed location: Under wheel housing liner in left rear wheel housing
   • Checking: In "Guided Fault Finding" using the vehicle diagnostic tester
   • Removing and Installing, refer to Leak Detection Pump (LDP) -V144- 
10. Connecting Line
    • To disconnect, press release button on connection piece
11. Bolt
    • 4 Nm
12. Bracket
13. Air Filter Housing
    • For the leak detection pump
14. Bolt
    • 4 Nm
15. EVAP Canister
    • Installed location: In the bottom of the spare wheel well
    • Removing and Installing, refer to EVAPORATIVE EMISSION (EVAP) CANISTER 
16. Bushing
17. Bolt
    • 8 Nm