Pull out the injector together with the cartridge using pliers.
Care should be taken to ensure that no dirt gets into the injector.
The injector (6) is installed with two sealing rings (5) into the injector cartridge (4)
When installing, it is necessary to lubricate the rubber sealing rings on the injector and on the cartridge with oil to facilitate installation.
If the injector is inserted "dry", there is a risk that the rubber ring will crack and there will be no necessary seal. This will lead to engine malfunctions due to the suction of additional air.
Damaged sealing rings must be replaced.
(The original article is available on the online resource: «AUDIMANUAL»)