Audi Workshop Service and Repair Manuals

Fuel Pressure: Mechanical Specifications

Fuel pressure at idle speed

Vacuum hose connected.......................................................................................................................................................................................3.2 ... 3.8 bar
Vacuum hose disconnected..................................................................................................................................................................................3.8 ... 4.2 bar

Residual pressure after 10 min.
cold engine about...............................................................................................................................................................................2.2 bar positive pressure
warm engine about.............................................................................................................................................................................3.0 bar positive pressure