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Touareg 2003 ➤
8-cylinder injection engine - Edition 11.2011
3.1
Assembly overview - activated charcoal filter system
1 - Expansion tank
2 - Gravity valve
3 - To gravity valve
4 - Pressure retention valve
❑ Function ⇒ page 118 .
5 - 9 Nm
6 - Connecting hose
7 - Air filter
❑ Clean if soiled.
8 - Connector
❑ For breather line.
9 - Activated charcoal filter
10 - 9 Nm
11 - Connector
12 - Activated charcoal filter
solenoid valve 1 -N80-
13 - Rubber bracket
14 - To connection
❑ On intake manifold
15 - Breather line
Function of pressure retention valve
From gravity valve (on expansion tank) the pressure retention
valve is open in both directions of flow. -Arrow 1- is the side to
expansion tank.
On the other side it is only open for flow in one direction.
-Arrow 2- is the side to activated charcoal filter.
3.2
Checking fuel system for leaks
Special tools and workshop equipment required
118
Rep. gr.20 - Fuel supply system
English 