Fuel System Leak Test
WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. 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 RPM.
-- Switch off the ignition.
-- Check the entire fuel system for leaks.
-- Replace the affected component if there are leaks in spite of correct tightening specifications.
-- Perform a road test and fully depress the accelerator pedal at least one time.
-- Check the high pressure system again for leaks.