The CDI unit controls the ignition: on a signal from the sensor it generates a pulse for the coil, determining the moment of the spark. This item is marked as a tuning part. Country: China. Sport CDI unit for 4T 50 scooters.
If the spark is gone, the engine stalls when hot or does not pick up revs, and the coil and wiring are fine, the cause may be the CDI unit.
