A6 Quattro Sedan V8-4.2L (BVJ) (2007)
‹› Check pressure gauge for leaks.
‹› Check fuel lines and their connections for leaks.
‹› Check the fuel pump delivery quantity. Refer to => Fuel Supply System 20 Diagnosis and Testing.
‹› Replace the fuel filter with the integrated fuel pressure regulator. Refer to => 20 Removal and Installation.
‹› Fuel pump check-valve is faulty => Fuel Supply System 20 Diagnosis and Testing.
Assembly is in reverse order of removal, note the following:
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Switch off ignition.
‹› Before removing pressure gauge, release fuel pressure by opening shut-off valve. Hold a container under the connection.
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Install the fuel supply line on the distribution piece. Make sure it is clean and there are no leaks.
Tightening Specifications
Tightening Specifications