A8 Sedan V8-3.7L (AEW) (1997)
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Fuel Pressure: Specifications
Pressure
At idle. ............................................................................................................................................................................................. approx. 3.6 bar (52 psi)
Disconnect vacuum hose (arrow) for fuel pressure regulator.
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Fuel pressure must increase to .............................................................................................................................................. approx. 4.2 bar (61 psi).
Residual pressure after 10 minutes ................................................................................................................................................ At least 3 bar (44 psi).