Professional Adjustable Spark Plug Tester for Automotive Diagnosis

【Five-Socket Design and High Testing Accuracy】 The spark plug tester features five spark plug sockets, including one standard test hole and four additional test holes. This allows you to test five spark plugs simultaneously, making it easy to compare the spark strength between old and new ones. By assessing the performance and ignition capability, you can quickly determine which spark plugs need replacement. Additionally, the tester simulates engine operation, restoring the authenticity of the car's rotate speed and saving time while achieving high efficiency and accurate results.

【Adjustable Frequency and Digital Display】 Capable of frequency adjustment from 200 to 9000 RPM, the spark plug tester ensures precise control and accuracy. With a digital display screen, the operating frequency is clearly shown, enabling you to fine-tune the spark strength for optimal performance. This wide range of RPM settings allows you to test under various conditions, ensuring reliable results.

【Easy to Use and Plug & Play】 This automotive spark plug tester is designed for ease of use. First, insert the new spark plug into the standard test hole, then the old spark plugs into the remaining test holes. Connect the power adapter to the power connector, then turn on the power switch. The indicator lights for each test hole will illuminate, and you can adjust the operating frequency to compare and observe the spark plugs' working status. Note that this package does not include spark plugs.

【Widely Compatible for 12V Gasoline Vehicles】 Our spark plug tester is perfect for 12V gasoline vehicles and can be used to test spark plugs of 14mm and 16mm sizes. It is compatible with all spark plug tests for crankshaft engines and motorcycles, making it a versatile tool for various vehicles.

【Important Tips】 Before placing your order, please read the tester information thoroughly to ensure a correct purchase. To avoid damage, do not pull out or insert spark plugs while the power is connected. Always turn off the power first. Furthermore, when the tester is in operation, the voltage can reach tens of thousands of volts, so do not touch it with bare hands to ensure safety.