General description Adjustable Spark Plug Tester is an essential tool for checking the ignition status of your engine. It allows you to conveniently and intuitively understand the operation of the ignition coil, making it easier to diagnose potential issues. Technical specifications Checks for missing ignition status Easy to read with clearly visible white inscription Determines coil quality based on spark color and distance Installation with screws to adjust the spark gap Installation Quick and easy installation with screws Adjustable spark gap for precise measurements Usage Prevents the ignition coil from igniting and burning out