A8 Quattro Sedan V8-4.2L (BVJ) (2008)
relieved to a residual pressure. Refer to => [ High Side Fuel Pressure, Reducing ] See: Fuel Filter/Fuel Pressure Release/Service Precautions.
‹› Then wrap a clean cloth around the connection and relieve the residual pressure by carefully loosening the connection.
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Remove the intake manifold. Refer to => [ Intake Manifold ].
‹› Seal the injector channels in the cylinder heads with clean cloths.
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Disconnect the electrical connectors from the fuel injectors.
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Remove the high pressure line - 5 - from the fuel rail.
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Remove the high pressure line - 7 - from the fuel rail. To do this, counter hold at the hex head with a open end wrench and loosen the union nut.
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Remove the screws - 1, 2, 3, 4, 6 and 8 -.
‹› Do not change the angles of the high pressure lines.
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Remove the fuel rail with the injectors.
If the fuel injectors cannot be pulled out of the cylinder head by hand, proceed as follows:
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Using a screwdriver, bend the retaining tabs - 1 - of the radial adjustment aside - arrow - and pull the support ring - 2 - off from the fuel injector.
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Remove the O-ring from the fuel injector.
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Install the (T10133/2A) in the groove on the fuel injector.