- Purpose: Quickly check the ignition system condition on each cylinder without visiting a mechanic. - How it works: Simply connect the tester between the spark plug and the candle cable. When a spark occurs, the tester reflects the spark and lights up. - Automatic model: Automatic spark tester provides an easy connection between the spark plug and the spark plug cable for fast checks. - Benefits: Saves time and money by enabling at-home diagnostics, helps identify spark, coil, or wiring issues, and supports quick validation of ignition activity across cylinders. - Use scenarios: - Troubleshooting a car engine with intermittent misfires to isolate a failing cylinder. - Checking ignition on motorcycles, ATVs, or small yard equipment during routine service. - Quick pre-repair check to confirm spark presence before replacing parts. - Key attributes: function is to test ignition activity by showing a visible spark; simple, direct connections between spark plug and its cable; suitable for diagnosing ignition health across cylinders.