Fuel Injector: Service Precautions

Fuel Injectors, Cleaning

Special tools, testers and auxiliary items required

• Ultrasonic Cleaning Unit (VAS 6418)

• Injection Module Mounting Plate (VAS 6418/1)

• Cleaning Fluid, refer to the Electronic Parts Catalog

Cleaning

- Remove the fuel injectors. Refer to => [ Fuel Injectors ] Fuel Injectors.

• Follow the safety precautions and the instructions for the ultrasonic device.

- The ultrasonic device must be filled with cleaning fluid.

• Fill the ultrasonic device up to the upper edge of the holes with cleaner (see the magnified area of the illustration).






- Insert the injector valve - 1 - all the way into the (VAS 6418/1) - 2 -.

- Dip the fuel injectors with the injector module mounting plate (VAS 6418/1) into the cleaning device.






- Adjust the temperature to 50 degrees using the knob - 4 -.

- Set a cleaning time of 30 minutes using the knob - 5 -.

- Switch the ultrasonic device on with the button - 3 -.

• The time begins counting down once the cleaning temperature reaches 50 degrees.

- Replace the combustion chamber seal (Teflon(R) seal) after cleaning each fuel injector. Refer to => [ Teflon(R) Combustion Chamber Seal ] Teflon(R) Combustion Chamber Seal.

- Install the fuel injectors. Refer to => [ Fuel Injectors ] Fuel Injectors.