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Injection System Technical Data

Engine Data 4.2L FSI Engine
Idle speed cannot be adjusted. It is regulated by idle stabilization   620 to 720/min
Engine speed limitation via fuel injector shut-off   8500 RPM
Fuel pressure Fuel supply-pressure up to high-pressure pump, (is produced by an electric fuel pump in the fuel tank) 5.0 to 6.5 bar (72.5 to 94.2 psi) pressure
  Fuel high pressure (produced by a mechanical single-piston pump) at approximately 85 °C (185 °F) coolant temperature Depending on the operating conditions, 25 to 135 bar (363 to 135 psi) positive pressure