VW CGRA - Checking Fuel System for Leaks

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6.2 Checking fuel system for leaks
Special tools and workshop equipment required
♦ Fuel system tester (so-called smoke tester) - KLI 9210-
♦ Adapter hose - KLI 9210/57-
♦ Vehicle diagnostic tester
♦ Hose clamps to 25 mm - 3094-
Test specification:
• A leak has been detected by the fuel system diagnostic pump
- V144- .
• Guided fault finding has been performed with the vehicle di‐
agnostic tester .
Preparation of fuel system tester - KLI 9210- :
Note
The fuel system tester - KLI 9210- may differ in appearance de‐
pending on the version.
– Check on fuel system tester - KLI 9210- if there is enough fluid
in smoke generator.
– Set valve -D- to “Hold”.
– Open nitrogen bottle -H-.
– Connect test hose -G- to self-test connection -B-.
– Set valve -D- to “Test”.
– Regulate pressure to 10 in. H2O (25 mbar) with pressure re‐
ducer -J-.
– Set valve -D- to “Hold”.
– Now pressure must be maintained for at least 2 minutes.
Check tester if pressure is not maintained.
Checking fuel system for leaks:
Touareg 2010 ➤ , Touareg 2015 ➤
6-cylinder direct-injection engine (3.6 l engine, 4V) - Edition 12.2019
208 Rep. gr.20 - Fuel supply system