Audi Workshop Service and Repair Manuals

Fuel Pressure: Mechanical Specifications

Fuel pressure at idling speed

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

Holding pressure after 10 minutes
Engine cold.......................................................................................................................................................................................................approx. 2.2 bar
Engine warm.....................................................................................................................................................................................................approx. 3.0 bar