Testing For Spark - Engine Diagnosis Tool!

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Amazon has one @ $9.00 that connects to the plug wire, then the spark plug. Easily shows strength impulse. Works connected to the motor running or not - or plug out of the motor. Very simple.
"Ram-Pro Inline Spark Tester, 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"
 
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