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 ] 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 ] Intake Manifold Assembly Overview

Removing

- Remove engine cover. Refer to => [ Engine Cover ] Engine Cover.

- Disconnect all electrical harness connectors from the intake manifold and fuel rail.

- 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.

- Disconnect fuel line - arrow - (catch escaping fuel and plug the open connections immediately).





- Disconnect hose connections - arrows - from valve cover.





- Remove both bolts - 1 and 2 - from coolant pipe.





- Remove bolt from oil line - 1 - and from coolant pipe - 2 -.





- Remove both fuel lines at high-pressure pump.





- Open hose clamps and pull intake hose off from Throttle Valve Control Module (J338) and intake manifold.

- Disconnect electrical connector - 1 - from Fuel Pressure Sensor (G247).





- Pull oil dipstick out and remove bolt - 2 - for oil dipstick guide tube.





- Remove bolt - 1 - for oil line.





- Remove nut - arrow - from intake manifold support (if necessary, remove Throttle Valve Control Module (J338 ) to do this).





- Separate oil dipstick guide tube - 2 - at separation point and remove bolt - 1 - for intake manifold bracket.





- Remove all bolts from intake manifold.

- Carefully remove intake manifold with fuel rail from cylinder head.

• The fuel injectors could remain stuck in the fuel rail.

- Fuel rail, removing and installing. Refer to => [ Fuel Rail ] Fuel Rail

Installing

- Installation is in reverse order of removal.

Tightening Specifications