Checking / adjusting the idle speed / ignition timing / CO content

As part of the maintenance, it is no longer necessary to adjust the idle speed, ignition timing and CO content, since the values of these parameters are constantly regulated by the electronic system.

If the actual values of the operating parameters deviate from the prescribed values, then the reason for this is defective components that must be replaced. A professional check of the engine management system is only possible using special diagnostic tools.