MST-770 Spark plug tester - Photo ID 45551 

MST-770 Spark Plug Tester, Ignition spark plug tester

Steel adapters for 14mm - 18mm are standard equipment with the Spark Plug quick Tester. Solid-state ignition system produces a stable ignition test voltage for greater accuracy and reliability. And the spark plug will produce a continual spark you can observe continual spark and compare the intension of spark and quickly judge the spark plug are good or bad and if you will continue use this spark plug

1. The role of spark plug:
Spark plug is one of the important components of ignition system, motor vehicles and other gasoline equipments' effective power depends largely on the performance of the spark plug, so it's said that the spark plug is the heart of the engine. Usually service life of spark plug is 15000km, service life of long-lived spark plug is 30000km. You need to replace the spark plug to a certain extent, so that cars will not reduce the power. This spark plug tester will tell you when to replace the spark plugs.

2. Range of Application of Spark plug tester:
1). Spark plug manufacturer: do factory testing for spark plugs;
2). Spark Plug dealers: verify the spark plug quality with customers;
3). The majority of owners: can detect whether your car needs to be replaced spark plugs at any time;
4). Auto mechanics, can use this to determine whether the ignition system malfunction is caused by spark plug.

3. 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.