Fuel System, Checking For Leaks
WARNING: This page is about a different car, the 2012 Volkswagen Touareg and 2011 Volkswagen Touareg. 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.
-- Replace the part if there are leaks in spite of correct tightening specifications.
-- Perform a road test. Press the accelerator pedal all the way down at least once.
-- Then check the high pressure area again for leaks.