Audi Q7 2007 !
6-cylinder TDI engine (3.0 ltr. 4-valve common rail), mechanics 01.2006
2 General repair instructions
3
6
♦ Carefully clean connection points and the surrounding area
with engine cleaner or brake cleaner and allow to dry thor-
oughly before opening.
♦ Plug open lines and connections with suitable protective
caps immediately.
♦ Place parts that have been removed on a clean surface and
cover them over. Use only lint-free cloths.
♦ Only install clean components; replacement parts should
only be unpacked immediately prior to installation. Do not
use parts that have been previously unpacked and stored
away loose (e.g. in toolboxes, etc.).
♦ When the system is open: Do not work with compressed
air. Do not move the vehicle unless absolutely necessary.
2.2 Checking for leaks in the fuel system
– Start the engine and let it run at medium speed for a few
minutes.
– Switch off ignition.
– Check the entire fuel system for leaks.
– If leaks are found although the connections have been
tightened to the correct torque, the relevant component
must be renewed.
– Then carry out a test drive with at least one full-power ac-
celeration.
– Then check high-pressure part of fuel system again for
leakage.
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