Ignition Tester Key benefits - Multi-function solution for ignition issues: helps address dirty spark plugs, ignition dead spots, bad wires or connections, and lets you easily check the passage of the ignition circuit on each cylinder. - Universal compatibility: designed to be compatible with all vehicles, making it a versatile tool for diagnosing trigger problems on all internal combustion engines. - Practical metal head design: compact spark plug tester with a metal head in spark plug type, and it can be easily connected between the spark plug and the plug cable, saving time and effort. - High quality construction: built with thick copper wire for strength and durability, able to withstand high voltage current testing and deliver long product life. What it tests and how it helps - Function: tests the ignition circuit path on each cylinder to identify issues such as weak spark, misfires, or faulty wiring. - Compatibility: suitable for use across a wide range of vehicles and engine types, making it a single solution for diagnostics. - Durability and performance: robust copper wiring supports reliable high voltage testing and consistent results over time. - Convenience: the metal head connects directly between the spark plug and the plug lead for quick setup and clear measurement. Use scenarios - Scenario 1: You notice rough idling or intermittent misfires on a four- or six-cylinder engine. Attach the Ignition Tester between each spark plug and its ignition wire to verify spark delivery and pinpoint faulty wires or coils. - Scenario 2: Diagnosing trigger problems on a variety of internal combustion engines. Use the tester to check the ignition circuit path on each cylinder to confirm uniform performance and identify cylinder-specific issues. - Scenario 3: After replacing spark plugs, use the tester to confirm a proper ignition circuit connection across all cylinders before test driving, ensuring there are no hidden wiring issues left unchecked.