A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
Fuel Rail: Service and Repair
Intake Manifold With Fuel Rail
Intake Manifold with Fuel Rail
The intake manifold runner position sensor (G336 ) item 10 must be adapted to the engine control module (J623) after removing or replacing the
intake manifold vehicle diagnosis, testing and information system (VAS 5052 ) "Guided Function".
CAUTION!
Before opening a component of the high-pressure section, the fuel pressure must be released. Refer to => [ Before Opening High Pressure
Fuel Injection System ] See: Fuel Filter/Fuel Pressure Release/Service and Repair.
‹› To access the fuel injectors, the intake manifold and the fuel rail with intake manifold runner control valve must be removed. (Depending on
version, more or fewer work steps may be required).
‹› The combustion chamber seal (Teflon) and the O-ring must always be replaced.
‹› The intake manifold runner position sensor (G336 ) must be adapted to the engine control module ( J623) after removing or replacing the fuel rail
vehicle diagnosis, testing and information system (VAS 5052) " Guided Function".
‹› Intake manifold, overview. Refer to => [ Intake Manifold Assembly Overview ] See: Engine, Cooling and Exhaust/Engine/Intake
Manifold/Service and Repair/Intake Manifold Assembly Overview
Removing
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Remove engine cover. Refer to => [ Engine Cover ] See: Body and Frame/Access Cover/Service and Repair/Engine Cover.
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Disconnect all electrical harness connectors from the intake manifold and fuel rail.
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Disconnect vacuum hose between intake manifold and vacuum pump from intake manifold.
‹› This vacuum hose and the vacuum pump (attached to rear of cylinder head) are only installed on vehicles with automatic transmission.
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Disconnect fuel line - arrow - (catch escaping fuel and plug the open connections immediately).
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Disconnect hose connections - arrows - from valve cover.