Operation CHARM
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Audi
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2001
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A8 Quattro Sedan (4D2) V8-4.2L (AUX)
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Repair and Diagnosis
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Powertrain Management
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Fuel Delivery and Air Induction
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Fuel Pump
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Fuel Pressure
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Specifications
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Pressure
Pressure
Fuel Pressure
at
idle speed
Vacuum hose connected
approx. 3.5 positive pressure
Vacuum hose disconnected
approx. 4.0 positive pressure
Residual Pressure
After 10 minutes
2.5 bar positive pressure minimum