Evaporative Emissions System, Overview

Evaporative emissions system, overview
1- Tank cap unit
^ with rubber cup
2- Fuel tank
- Support with VAG 1383 A engine/transmission jack when removing
^ Removing and installing
=> Refer to Fuel tank, removing and installing.
3- Fuel delivery unit
^ Removing and installing
=> Refer to Fuel delivery unit, removing and installing.
4- Throttle Control Module J338
5- Intake manifold upper section
6- Fuel rail with injectors
7- Fuel pressure regulator
8- Fuel filter
^ Installation position: Arrow points in direction of flow
9- EVAP canister purge regulator valve N80*/**
^ in right engine compartment, over wheel housing
^ Activation, checking:
^ Function, checking
=> Refer to Evaporative emissions system, overview.
10- Test connection
11- Gravity/overflow valve
12- Pressure retention valve
^ for fuel tank breathing
^ Checking => Refer to Fuel tank components, removing and installing Fig. 3.
13- Change over valve
^ Checking => Refer to Fig. 2
14- EVAP canister
^ In left rear wheel housing under wheel housing liner
15- Leak Detection Pump (LDP) V144
^ on EVAP canister
^ Checking => Refer to Leak Detection Pump, checking.
16- Air cleaner
^ for Leak Detection Pump