audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Bleeding fuel supply line leading to metering pump - vehicles with auxiliary heater > < Bleeding fuel system
Bleeding fuel system
Bleeding fuel system
Vehicles with unit injector engine
t  Due to the design of the engine, with a fuel system pressurisation pump located in the fuel tank, it is not necessary to bleed the fuel system.
t  The fuel system bleeds itself when the starter is operated.
Vehicles with common rail engine
  Caution
Running when dry causes irreparable damage to high-pressure pump.
If the fuel filter, the fuel lines or the supplementary fuel pump -V393- are renewed, it is important to bleed the fuel system before the engine is started for the first time.
–  Bleed fuel system → Rep. gr.23.
   

Bleeding fuel supply line leading to metering pump - vehicles with auxiliary heater > < Bleeding fuel system