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Foreign particles in engine > < Rules for cleanliness when working on fuel supply system, injection system and turbocharger

A3 Mk2

Checking for leaks in the fuel system
Checking for leaks in the fuel system
Procedure
–  Allow engine to run for several minutes at moderate rpm.
–  Switch off ignition.
–  Check complete fuel system for leaks.
–  If leaks are found although the connections have been tightened to the correct torque, the relevant component must be renewed.
–  Road-test vehicle and accelerate with full throttle at least once.
–  Then inspect high-pressure section of fuel system again for leaks.
   

Foreign particles in engine > < Rules for cleanliness when working on fuel supply system, injection system and turbocharger