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 (VAS 6418/2)

Cleaning

- Remove fuel injectors => [ Fuel Injectors, Removing and Installing ] Fuel Injectors, Removing and Installing.

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

- The ultrasonic device must be filled with cleaning fluid (VAS 6418/2).

• 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 injector module mounting plate (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 seal0 after cleaning each fuel injector => [ Teflon Seal on Fuel Injector, Replacing ] Teflon Seal on Fuel Injector, Replacing.

- Then install the fuel injector valves => [ Fuel Injectors, Removing and Installing ] Fuel Injectors, Removing and Installing.