A8 Quattro Sedan V8-4.2L (BVJ) (2008)
Oil Spray Jet: Service and Repair
Oil Check Valve and Spray Nozzle Valve
Oil Check Valve and Spray Nozzle Valve
‹› If irregular valve noises disappear after a long drive but always return on short drives, oil check valve must be replaced.
Removing
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Remove intake manifold.
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Remove bolts - 1, 4, 5, 6, 7 - on high pressure line retaining clamps.
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Disconnect electrical harness connectors at fuel injectors.
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Remove high pressure lines - 2 and 9 - from connections on fuel rail.
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Remove high pressure lines - 3 and 8 - from connections on fuel rail. To do this, counterhold at hex head with and open-end wrench and loosen
the union nut.
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Remove high pressure lines.
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Remove bolts - arrows -.
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Remove cover - 2 - with crankcase ventilation hose - 1 -.
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Remove seal.