Tests for lack of spark condition.
Essential for troubleshooting all internal combustion engines.
Tests easily in minutes.
New In Package.
Use to quickly troubleshoot ignition system. Device is "hands-free." Connects in-Iine between spark plug and spark plug wire. Shows a duplicate view of the ignition spark. Technician can visually check condition of ignition system at each cylinder. Flash can be seen in bright sunlight. Clear plastic body can withstand rough use and resists automotive chemicals. Protected by mechanical strain relief.