Fuel System Leak Test
WARNING: This page is about a different car, the 2022 Audi A5 Sportback, 2021 Audi S5 Sportback, 2021 Audi A5 Sportback, and 2020 Audi S5 Sportback. 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.