Spark plug car tester - Function and purpose: a reliable tool for drivers and enthusiasts to test spark plugs and assess ignition status. It helps diagnose ignition-related issues and supports maintenance decisions. - Multi-function capability: not only can it test ignition signals, but also detect spark plug performance to meet different diagnostic needs. Suitable for checking both ignition circuits and plug condition. - Compatibility and application: designed for use with cars and motorcycles, making it a versatile ignition tester for automotive and motorcycle maintenance. - Accurate and straightforward operation: provides clear indications of ignition status, helping you determine if your spark plugs are firing correctly and if any ignition problems are present. - Practical use scenarios: - Vehicle diagnosis: use during misfire or rough idle troubleshooting to identify whether the issue lies with the spark plug or ignition system. - Post-maintenance verification: confirm spark plug firing after replacement or service to ensure proper operation. - On-the-go checks: quick ignition status verification before a road trip or daily ride for both cars and motorcycles. - What you get: a dedicated spark plug tester that accurately detects ignition status and aids in maintaining optimal engine performance.