A6 V6-3.0L (AVK) (2004)
Fuel Pressure: Testing and Inspection
With Generic Scan Tool
Fuel Pressure Regulator And Residual Pressure, Checking
Recommended special tools and equipment
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Fuel Inj. Pressure Gauge Set V.A.G 1318 with adapters V.A.G 1318/6 and V.A.G 1318/7
Test requirements:
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Fuel Pump (FP) Relay OK; checking.
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Delivery quantity of Fuel Pump (FP) OK; check. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Component Tests and General Diagnostics/Fuel Pump (FP), Checking Delivery Quantity
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Fuel filter OK
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Parking brake engaged.
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Vehicles with automatic transmission: Selector lever in P or N.
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Electrical consumers switched off (radiator fan must NOT run during test).
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A/C switched off.
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Ignition switched off.
Procedure
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Remove rear engine cover (arrows).
Checking system pressure
CAUTION: Fuel system is under pressure. Before opening system, place rags around the connection. Then release pressure by carefully loosening
connection.
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-Open fuel filler flap briefly (pressure release).