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Home >> Audi >> 2001 >> S8 >> Repair and Diagnosis >> Engine Performance >> Specifications >> Engine Controls - Service & Adjustment Specifications >> Fuel System >> Fuel Pump >> Fuel Pressure Specifications (4.2L)
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Fuel Pressure Specifications (4.2L)

FUEL PRESSURE SPECIFICATIONS (4.2L)

Function Specification
System Pressure
With Engine Idling (1) 58 psi (4.0 bar)
With Engine Idling (2) 50 psi (3.5 bar)
Residual Pressure (3) 36 psi (2.5 bar)
(1) With fuel pressure regulator vacuum hose disconnected.
(2) With fuel pressure regulator vacuum hose connected.
(3) After 10 minutes.
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