The basic operational activity in the work on the ignition system is the replacement of spark plugs. We also verify the condition of the high-voltage wires, the dome and the ignition distributor. We check the efficiency of the ignition coil and module. We check the operation of the sensors and make sure that the ignition apparatus does not show signs of excessive wear. In the case of some engines, it is also necessary to verify the correctness of the ignition advance angle and make a possible adjustment in this area.