How do you remove injector on Mercedes 190 diesel and what is the torque settings?

To remove the fuel injector on a Mercedes 190 diesel, first disconnect the battery and remove any necessary engine covers. Then, disconnect the fuel lines and electrical connectors from the injector, and use a suitable injector puller or a gentle rocking motion to extract the injector from the cylinder head. As for torque settings, the injector hold-down bolts typically require a torque of around 20-25 Nm (15-18 lb-ft), but it's always best to consult the specific service manual for your vehicle model for precise specifications.