MST-880 Spark Plug Tester Deion: Precautions: 1. MST-880 Spark Plug Tester is a high-voltage detector, so when the
detectors are not in use, be sure to take the battery out to avoid
danger. 2. If the discontinuous state appears in the process of using, that is
normal, please loosen the switch with 3 seconds, you can continue to
use. Test principle: In automobile ignition system, the high-voltage ignition coil generates a
high-voltage (10,000 volts or more), and the spark plug diverts it from
high-tension ignition coil into the cylinder engine, spark between the
spark plug electrodes will ignite the mixture. The detector could tell
the good spark plugs from the bad by the strength of the spark. Test Methods: 1. Place the spark plug on the pedestal 2. Power-on 3. Press the key switch, the red LED will illuminate and the good spark
plug will generate a strong spark and the bad will generate a faint one
or not . 4. Loosen the key switch, take the spark plug down the tester by pinching the bottom of it. Package including: 1pc x MST-880 Spark plug tester 1pc x 12V linear regulator 1pc x User's manual
