5-Holes Spark Plug Tester, Adjustable Simulated RPM 200~9999rpm & Hole Height, Automotive Engine Ignition Coil Tester with Protective Cover, Digital Display & Indicator for 12V Vehicles and Motorcycle

5-Hole Spark Plug Tester - 5 spark plug comparison tests at the same time, judge the performance and ignition strength of the old spark plug by comparing the spark intensity of the new spark plug, and replace the bad spark plug in time to improve the engine performance. Save valuable time and greatly enhance your workflow.

• 5-Hole Spark Plug Tester - 5 spark plug comparison tests at the same time, judge the performance and ignition strength of the old spark plug by comparing the spark intensity of the new spark plug, and replace the bad spark plug in time to improve the engine performance. Save valuable time and greatly enhance your workflow.
• Adjustable Test Hole -The test hole of 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. The spark plug tester is widely compatible with almost all 12V gasoline and diesel car spark plugs, as well as crankshaft engine and motorcycle/truck spark plugs.
• Variable Working Frequency - Spark plug tester simulates actual engine speed and can detect the ignition of spark plugs under different working conditions, ranging from 200 to 9000rpm/min. Spark plug tester comes with adjustment buttons, the working frequency can be adjusted as required. The higher the set frequency, the stronger the spark intensity.
• Digital Screen Display & Protective Cover Design - The car spark plug tester is designed with a digital screen, which can check the speed in real time and achieve precise control. With high-quality ABS protective cover design, which can effectively prevent accidental touch and ensure the safe operation of personnel during the test.
• Easy Operation & Plug and Play -Simply insert a reference new spark plug into the standard hole and the tested one into the test hole, connect the power, and the indicator light turns on. Switch on the device, adjust the frequency with the push buttons, and observe spark performance clearly.