A6 Sedan V6-2.8L (ATQ) (2000)
Fuel Pressure: Testing and Inspection
Fuel Pressure Regulator And Residual Pressure, Checking
NOTE: Fuel pressure regulator regulates fuel pressure according to intake manifold pressure. This ensures that the pressure drop at the fuel injectors
remains the same for each speed and load range of the engine.
Special Tools and Equipment
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VAG1318 with VAG1318/7 adapter, VAG1318/8 pressure hose with connectors and VAG1318/15 adapter
Test requirements:
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Fuel Pump (FP) OK, checking. See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Fuel Pump Relay/Testing and Inspection
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Fuel Pump (FP) OK, checking:
Repair Manual, Fuel Supply System, Repair Group 20; Fuel Front Wheel Drive or fuel supply - All Wheel Drive
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Fuel filter OK
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Battery voltage at least 12.7 V
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Vehicles with automatic transmission Selector lever in P or N.
WARNING!
Fuel system is under pressure! Place a cloth around the connection point before opening system. Then release pressure by carefully loosening
connection point.
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Remove engine cover (arrows).
Checking system pressure