Ram-Pro In-Line Spark Plug Engine Ignition Tester, 6-12 Volt Fool-Proof – Pick Up Coil/Armature Diagnostic Detector Tool – For Automotive, Car, Lawnmower, Small & Big Internal/External Engines

About Ram-Pro In-Line Spark Plug Engine Tester.Quickly and easily diagnoses ignition/engine issues.TO USE: with engine off, remove rubber boot from spark plug, & Simply connect the tester between the spark plug and the plug wire, if ignition spark...