Review on MIKKUPPA Inline Spark Plug Tester for Small Motor Vehicles: Ideal for Motorcycles, Lawn Mowers, and More by Souly Buddy

Received today. The connectors are dirty and rusty like it's a flashback. I hope they work when I use them. As expected, none of them work. Plugged in, the engine is running, the lights are off. Apparently I have a spark from the tool or the engine won't start. Very disappointing. Easy to use but no precision as no light is on. Again, I suspect I received someone's return.