Key benefits Diagnose ignition and engine problems quickly without starting the engine. Use the tool to check for spark and identify faulty coils or plug leakage before you tear down the engine. Measure coil performance and spark quality to prevent misfires and high-energy spark plug leakage, saving time and avoiding unnecessary repairs. Simple, reliable readings with a clear scale and an easy-to-adjust knob for fast troubleshooting in the shop or at the job site. Features and performance Spark testing without engine start: verify spark presence and behavior safely without cranking the engine. Coil voltage and leakage detection: helps determine coil voltage output and detect high-energy spark plug leakage. Readable gauge: high-visibility white font on the dial for easy reading; measures deviation over a 0–40k range for straightforward interpretation. Easy operation: round adjustment knob provides quick, precise gauge tuning for different tests. Removable standard machine plug: the standard machine plug can be unscrewed to accommodate different spark plugs and applications. Compatibility Designed for small engines and a range of outdoor power equipment and light vehicles. Suitable for many motorcycles, lawn mowers, chainsaws, trimmers, snow blowers, and similar engines that accept standard spark plugs. How it solves common problems Quickly isolates ignition faults so you can determine whether a no-start condition is due to spark, coil, or another issue. Detects weak or leaking spark plug/coil combinations before they cause performance issues or damage. Reduces diagnostic time and prevents unnecessary parts replacement by giving clear, immediate feedback on spark system condition. Typical use scenarios Lawn mower that won’t start: connect the tester to the spark plug to confirm whether the ignition is producing a strong, consistent spark before checking fuel or compression. Motorcycle troubleshooting: measure coil output and look for leakage or weak sparks during routine maintenance or after a hard ride. Chainsaw or trimmer maintenance: quickly verify spark quality after storage or before a job to avoid on-site failures. Operation tips Attach tester to the spark plug per standard procedure, adjust the gauge with the round knob for a clear reading, and observe the white-font scale for deviation within the 0–40k range. Use the removable standard machine plug to fit the spark plug you are testing; tighten or loosen as needed for a secure connection. Trust and value Straightforward, purpose-built design focused on practical diagnostics for small engines and light power equipment. Clear readouts and simple controls make this tester appropriate for mechanics, maintenance technicians, and DIY users who need reliable ignition checks without complex setup.