Audi Workshop Service and Repair Manuals

Fuel Pressure: Specifications

SYSTEM OPERATING PRESSURE .............................................................................................................................................  6.1-6.5 bar (85-95 psi)
SYSTEM REST PRESSURE ......................................................................................................................................................  3.4 bar (49 psi) minimum
DIFFERENTIAL PRESSURE [1] ..................................................................................................................................................  1.2-1.5 bar (17-22 psi)
INJECTOR OPENING PRESSURE ..............................................................................................................................................  4.3-4.6 bar (63-68 psi)
 
[1] Warm engine; Oxygen sensor connected; Differential pressure regulator current, nominal 0-5mA positive current and varying, @ idle.