LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Audi >> 2001 >> S8 >> Repair and Diagnosis >> Engine Performance >> Specifications >> Engine Controls - Service & Adjustment Specifications >> Fuel System >> Fuel Pump >> Fuel Pressure Specifications (2.8L)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel Pressure Specifications (2.8L)

FUEL PRESSURE SPECIFICATIONS (2.8L)

Function Specification
System Pressure
With Engine Idling (1) 46-55 psi (3.2-3.8 bar)
With Engine Idling (2) 55-61 psi (3.8-4.2 bar)
Residual Pressure
Cold Engine (3) 32 psi (2.2 bar)
Warm Engine (3) 44 psi (3.0 bar)
(1) With fuel pressure regulator vacuum hose connected.
(2) With fuel pressure regulator vacuum hose disconnected.
(3) After 10 minutes.