Evaporative Emissions System

Hose Routing, EVAP Canister/leak Detection System (8-cyl. FSI Engine (Audi RS4))







1 - To air filter housing
2 - Intake manifold
3 - Throttle valve control module J338
4 - Evaporative Emission (EVAP) Canister Purge Solenoid Valve 1 N80
- Component location: At front in engine compartment
- Checking Fuel Injection and Ignition
5 - Purge line
- From EVAP canister to Evaporative Emission (EVAP) Canister Purge Regulator Valve N80
- Installed location: At right beneath vehicle floor
- Secured to fuel tank in fuel tank area
6 - Vent line
- To gravity valve at fuel tank
7 - EVAP canister
- Location: Bottom of spare wheel well
8 - Leak detection line
- Leak detection pump/EVAP canister
- Pressure side
9 - Air filter housing
- For Leak detection pump (LDP) V144
10 - Leak detection pump (LDP) V144
- Location: In left rear wheel housing behind wheel housing liner
- Check using "Guided Fault Finding"
11 - Vacuum reservoir
- For Leak detection pump (LDP) V144
- Location: In left front wheel housing behind wheel housing liner
12 - To vacuum diaphragm for exhaust flap
13 - Vacuum line
- To Leak detection pump (LDP) V144
14 - Separating point
- Location
15 - Check valve
- Installed location: - Arrow - points in direction of flow
16 - For Secondary Air Injection (AIR) Solenoid Valve N112
17 - To Intake Manifold Runner Control (IMRC) Valve N316







Separation point location
The separating point - arrow - is located at left of engine compartment.
- To disconnect, press release button on connection piece.