Designed for coil-on-plug ignition systems, this spark tester provides a direct method for diagnosing no-start conditions where inductive testing is not possible. It utilizes a round adjustment knob to set the gap from 0 to 40k, which is marked with high-visibility white lettering for clear measurement. The 12" (30.5 cm) ground wire includes a shielded clip, and the standard plug wire tip can be unscrewed to accommodate small engines and motorcycles.

Designed for coil-on-plug ignition systems, this spark tester provides a direct method for diagnosing no-start conditions where inductive testing is not possible. It utilizes a round adjustment knob to set the gap from 0 to 40k, which is marked with high-visibility white lettering for clear measurement. The 12" (30.5 cm) ground wire includes a shielded clip, and the standard plug wire tip can be unscrewed to accommodate small engines and motorcycles.