Fuel System, Performing Leak Test
WARNING: This page is about a different car, the 2012 Audi Q5, 2011 Audi Q5, 2010 Audi Q5, and 2009 Audi Q5. However, it is still accessible from the selected car via links, so may be relevant.
Proceed as follows:
-- Let the engine run a few minutes at a moderate speed.
-- Switch off ignition.
-- Check the entire fuel system for leaks.
-- If there are leaks in spite of correct tightening specifications, the corresponding component must be replaced.
-- Then perform a road test and depress the accelerator pedal all the way at least one time.
-- Then check the high pressure area again for leaks.