Spark plug tester, adjustable automotive spark plug tester, ignition coil tester, online automotive system detector, diagnostic repair tools, pen

Practical ----- Ignition spark tester with spark gap, which can display whether there is ignition voltage and its intensity. Unlike spark plugs, you can test spark plugs with this tool and check their remaining power. Practical ----- Ignition spark tester with spark gap, which can display whether there is ignition voltage and its intensity. Unlike spark plugs, you can test spark plugs in this tool and check their remaining capacity. Simple Operation ----- The spark gap can be adjusted by turning the setting screw, making operation simple. SECURE The seat is screw-mounted for quick and easy spark gap adjustment to prevent fires and wear on the ignition coil. Robust The ignition coil's operation is simple and intuitive, and the retaining clip is firmly fixed to the ground. Features The coil's quality can be determined by the color and distance of the sparks. A good integrated ignition system should maintain a minimum spark gap of 15 mm/0.6 inches.