90 Quattro 20V L5-2309cc 2.3L DOHC (7A) (1990)
Fuel Pressure: Specifications
SYSTEM OPERATING PRESSURE
Pressure regulator vac. hose disconnected ........................................................................................................................... 55 - 61 psi (3.8 - 4.1 bar)
Vac. hose connected & 18" - 20" Hg vacuum ...................................................................................................................... 44 - 51 psi (3.0 - 3.5 bar)
SYSTEM REST PRESSURE ...................................................................................................................................................... 43 psi (3.0 bar) minimum