Fuel System, Checking For Leaks
WARNING: This page is about a different car, the 2009 Audi TT and 2008 Audi TT. However, it is still accessible from the selected car via links, so may be relevant.
-- Let the engine run a few minutes at a moderate speed.
-- Turn off the 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.