Fuel Pressure Pulsation Damper: Service and Repair

REPLACING FUEL PULSATION DAMPER

Special Tools: 999 5533 (5)





Drain Fuel Injection System

- Drain the fuel injection system before replacing pulsation damper. See: Fuel Tank.
- Remember the fire risk and observe strict cleanliness when working on components in the fuel injection system.





Removing

Remove:
- Fuel rail cover.
- Injector connectors.
- Fuel line clips.





Installing Holders

Install:
- Holder 999 5533 on injectors.
- Press in holder to ensure that it is seated firmly against the injector.
- Screw down adjustment screw so that the contact plate is in contact with the fuel rail, turn the screw another half turn.





Removing Fuel Rail

Remove:
- Screws holding fuel rail. Lift fuel rail with injectors.
- Remove fuel rail from fuel line by twisting it approx. 90° and pulling it away from the fuel line.
- Place paper wipe under the connector to absorb fuel spills.

NOTE! Handle injectors carefully to avoid damage to nozzles and needles.





Removing Pulsation Damper

Remove:
- Screws holding mounting rail to fuel rail.
- Mounting rail.
- Pulsation damper.





Installing New Pulsation Damper

- Lubricate the new pulsation damper 0-ring with a thin layer of petroleum jelly.
- Install the new pulsation damper.
- Remove holders from all injectors,
- Install mounting rail.
- Pull injector nozzles out a few millimeters from the fuel rail to install mounting rail.
- Tighten mounting rail on fuel rail.





Installing

Install:
- Fuel rail on intake manifold.
- Use new screws and tighten to 10 Nm.
- Fuel line clips.
- Injector connectors. Check that each connector is fitted with a rubber seal.
- Fuel rail and throttle pulley covers.
- START engine and check for fuel leakage.