Review on Efficient Inline Spark Plug Tester: Engine Ignition Diagnostic Detector for Automotive Car Lawnmower Internal External Engine (1) by Justin Cranford
Nothing can be seen in the ignition tester
Better just pull the plug and touch the earth head. I never saw a light on any of my spark tests, even on machines I knew had sparks. I found one had a spark (I expected but never tested) after being shocked by this spark tester trying to get a closer look at the light when cranking. ZaP yes it is electricity. Without light. Useless.
- Weight
- Out of fashion
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