CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
Removing and installing fuel system di‐
agnostic pump - V144- (Eos)
– Pull off vacuum line -1-, breather line (air outlet) -2- and breath‐
er line (air inlet) -3-.
– Unscrew nuts -arrows-.
– Remove diagnostic pump with bracket and disconnect elec‐
Installation is carried out in the reverse order. When installing,
note the following:
♦ Reconnect electrical connector before securing diagnostic
pump with bracket.
♦ The breather line -2- must engage audibly.
Specified torques: ⇒ page 413
Checking fuel system for leaks
Special tools and workshop equipment required
♦ Fuel system tester (so-called smoke tester) - KLI 9210-
♦ Adapter hose - KLI 9210/55-1-
♦ Vehicle diagnostic tester
♦ Hose clamps to 25 mm - 3094-
The plug-in connectors for fuel, vacuum and breather lines are
colour coded. There is either a coloured dot on the plug-in con‐
nector or the release button is coloured.
Colour code on plug-in connec‐
A leak has been detected by the fuel system diagnostic pump
- V144- .
Guided fault finding has been performed with the vehicle di‐
agnostic tester .
Rep. gr.20 - Fuel supply system