EVAP canister/leak detection system, 8-cyl. FSI engine (Audi RS4), component overview

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2008 Audi S4, 2008 Audi RS 4, 2008 Audi A4, 2007 Audi S4, and 2007 Audi RS 4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: EVAP Canister/Leak Detection System, 8-Cyl. FSI Engine (Audi RS4), Component Overview

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Nut, 2.3 Nm

2 - Purge line

To Evaporative Emission (EVAP) Canister Purge Regulator Valve N80
To disconnect, press release button on connector

3 - Vent line

From gravity valve at fuel tank
To disconnect, press release button on connector

4 - EVAP canister

Location: Bottom of spare wheel well
Removing and installing → EVAP canister, removing and installing (8-cyl. FSI engine (Audi RS4))

5 - Air filter housing

For Leak detection pump (LDP) V144
No maintenance schedule

6 - 4 Nm

7 - Vacuum line

To Leak detection pump (LDP) V144

8 - Cable tie

To fasten vacuum line to bracket for leak detection pump

9 - Leak detection pump (LDP) V144

Component location: In left rear wheel housing behind wheel housing liner
Checking → Leak Detection Pump (LDP) V144 , checking (vehicles with MPI-engine)
Removing and installing → Leak Detection Pump (LDP) V144 , removing and installing

10 - Electrical harness connector

11 - Leak detection line

Leak detection pump/EVAP canister
Pressure side
To remove from leak detection pump, press release button on connection

12 - Connecting hose

Leak diagnosis pump/air filter

13 - Cable tie

To fasten hose to bracket of leak detection pump

14 - Cable tie

To fasten connecting hose to wheel housing

15 - Leak detection line

Leak detection pump/EVAP canister
Pressure side
To disconnect, press release button on connector

16 - Bolt, 9 Nm

17 - EVAP canister cover

18 - Bolt, 2 Nm