Ignition System Evaluation - The Spark Plug Tester accurately assesses the performance of your vehicle's ignition system. Under normal conditions, the spark appears blue and exhibits consistent jumping patterns. Abnormal conditions are indicated by sparks that are yellow, red, or intermittently interrupted, providing clear insights into the condition of your ignition system. Transparent Observation Window for Easy Monitoring - Equipped with a transparent observation window, the tester allows clear visibility of the spark jumping process. This feature enables users to quickly confirm whether the spark is functioning normally, facilitating efficient diagnostics and troubleshooting. Enhanced Efficiency and Safety - The Spark Plug Tester is engineered to improve work efficiency while ensuring user safety. Its ergonomic design and intuitive operation make it easy to use. Additionally, the tester is designed to minimize the risk of electrical shock, providing a safe and reliable testing experience. Secure Grounding Clamp - The tester features a robust grounding crocodile clip that securely attaches to the vehicle's grounding point. The clip is equipped with a rubber cover to prevent accidental slips and ensure a stable connection throughout the testing process, enhancing the accuracy and reliability of the test results. Use scenarios - Routine ignition system checks on gasoline engines, especially when diagnosing misfires or starting issues. - Post-maintenance verification after replacing spark plugs or ignition coils to confirm proper ignition function. - On-site diagnostics in repair shops or during mobile service visits to quickly assess ignition system performance and guide repairs.