Checks whether there is high tension spark potential at the spark plug
"Hands-free" operation means no risk of electric shock to the user
Ideal for modern vehicles with sensitive electronics
Easy to use - Remove the rubber boot from the spark plug, insert the inline tester & place the tester boot on the plug.
Turn the engine over - The tester light will glow if an ignition spark is being sent to the cylinder.
SP Hand Tools are covered against manufacturing defects or faulty materials. This warranty does not cover overloading, abuse, misuse, and/or normal wear and tear. All SP Hand Tools are designed and manufactured for specific purposes and if not used for that intended purpose they will not be covered by the lifetime warranty. Exemptions - All measuring equipment (12-month warranty), battery-operated wrenches (24-month warranty), striking and cutting tools (6-month warranty).