Fuel System Leak Test
WARNING: This page is about a different car, the 2016 Audi A3 and 2015 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.
-- Let the engine run a few minutes at idle without pressing the accelerator pedal and then stop the engine. The fuel system bleeds itself.
-- Check the entire fuel supply system for leaks.
Replace any leaking parts.
-- Perform a road test where the accelerator pedal is fully depressed at least one time. Then check the high pressure system again for leaks.
-- Install the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .