Spark plug tester

The device is a high voltage generator and serves to check, as well as a qualitative assessment of the spark plug. Suitable for the diagnosis of spark plugs of gasoline engines. It is possible to install two candles at once for a visual comparison of the spark in good (new) and faulty (old) spark plugs. Checking the spark plug is carried out by the visual method by comparing the spark of the checked candle with the reference (new, obviously serviceable).