Key features

• •【Five-hole Simultaneous Comparison Test】The spark plug tester has 5 test holes, which can carry out 5 spark plug comparison tests at the same time. One is the standard test hole (insert a brand new spark plug), and the other four are test holes (insert the spark plug to be tested). The 5-hole spark tester greatly improves work efficiency, saves your time, helps you quickly judge the performance and strength of spark plugs and replaces bad spark plugs in time to improve engine performance.
• •【Upgraded Adjustable Test Hole】The test hole of upgraded spark plug tester adopts a knob-type copper ring design, the copper ring knob can adjust the socket height to be compatible for spark plugs of different heights.
• •【0~9999rpm Adjustable Working Frequency】Spark plug tester simulates actual engine speed and can detect the ignition of spark plugs under different working conditions, ranging from 0 to 9999rpm/min. Spark plug tester is equipped with up and down buttons to adjust working frequency. The higher the set frequency, the stronger the spark intensity.
• •【Widely used for 12V Gasoline & Diesel Spark Plugs】Spark plug tester is compatible with all crankshaft engine and motorcycle spark plugs on the market. Spark tester is widely used to test spark plugs of all 12V gasoline and diesel vehicles.
• •【Digital Screen Display & Indicator Prompt】The spark plug tester is designed with a digital display screen, which can check the speed in real time and achieve precise control. Each test hole of the ignition coil tester has a corresponding indicator light to indicate the status of the spark plug, which is clear at a glance.
• •【Easy Operation & Plug and Play】Just put a brand new spark plug into the standard hole, then put the spark plug to be tested into the test hole, then connect the power supply, the indicator light will be on. Finally, turn on the switch of the spark plug tester, press the up and down buttons to adjust the working frequency, and observe the test status of the spark plug. Note: The package does not include spark plugs.