S&G Tool Aid 23920 in-Line Ignition Spark Checker with 90 Degree Boot

I used this to check the spark on my old Honda motorcycle. It works fine, but it really isn't build for motorcycle plugs as it doesn't fit tightly. Basically it is a quick way to see if the plug is sparking. Its easier to see, and a bit safer, than setting the plug against the head and looking for a spark

So, with my old car it was impossible to test this on spark plugs without completely taking apart engine components. So, In my new car I tested the cord. The cable is a bit cheaply built BUT it did its job. It worked and tested all spark plugs efficiently. I would recommend this BUT CHECK YOUR CAR FIRST NOT ALL SPARK PLUGS ARE EASILY ACCESSIBLE!!!!!!!

It's exactly what you expect.

This thing did it's job as it's supposed to. Helped me troubleshoot a bad ignition module on my riding lawnmower. It's been an intermittent problem, but easily spotted with this tester. Wouldn't have found it by the old spark plug on the engine method. Being that the engine is a 2 cylinder, the light just stays on (or flashes so fast it looks that way) on the good side. Not so much on the bad side. Worth it!

This is easy to use to check if the spark plug gets power. The light brightness can show if there is problem with the coil.Must have for I have old engines. It is reasonably price.

Good product, but the spark light can be difficult to see in daylight.

Worked ok, seemed a little difficult to hook up on my saw

Durable