RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
![background image](/audi/rs_4_quattro_cabriolet/v8-4.2l_(bns)/Page-845001.png)
Oil Pressure Regulator Valve: Service and Repair
Oil Check Valve and Spray Nozzle Valve
Oil Check Valve and Spray Nozzle Valve
‹› If irregular valve noise occurs repeatedly during short journeys and disappears after extended driving, the 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.