Injector/Pulse Damper, Replacement: Preparation
Drain the fuel injection system. See Fuel system pressure release .
Remove the plastic hoses between the turbocharger (TC) / charge air cooler (CAC) and the air cleaner (ACL) / turbocharger (TC). Place them to one side and seal the openings. Applies only to B6xx4T .
Remove the upper section of the intake manifold. Cover the hole using tool 9995723 . Only applies B6xx4S engines .
Remove the fuel rail.
Disconnect the connectors from the injectors.
Remove the mounting screws from the fuel rail.
Separate the fuel line's quick-release connector, see also: Fuel line, lock . Use tool 9512666 .
Spray universal oil or similar around the injector terminals on the intake manifold.
Gently work the fuel rail and injectors loose.
Handle the injector valves carefully to avoid damaging the injector valve nozzles with needles.