Features:

  • √ Professional Design - According to spark color and flash over distance to determine the quality of the coil.
  • √ Great Value - Can intuitively convenient to understand the operation of the ignition coil.
  • √ Better And Faster - It is the quickest way to test for no-start conditions.
  • √ Easy To Read - High visibility white lettering makes it easy to read the gap measurement.
  • √ Perfect Selection - Screw assembly adjusts spark gap quickly and easily. Avoid fire, the ignition coil burned out and so on.
Five Stars

works as expected

It works great!

It works great! Very easy to use and diagnosed the problems.

Works great

Quality is spot on. Made of dielectric and seems durable. Just as good as a name brand but almost half the price. The adjustable gap is great for testing weak ignition systems.

Use it every day in a professional automotive shop.

I didn't have such great expectations for this little guy. But I work at an automotive shop. We get cars coming in two to three times a day with no starts. Just plug this thing into the coil ungrounded or to the coil pack and ground it and you'll see the Sparks. I love that it's adjustable. I'll small spark that goes up to 20 mark is okay. But to check the strength I put it up to 30. You will be able to tellinstantly if you have a bright spark long spark or a short yellowish spark everyone at the shop loves this thing. They ended up buying their own as well.

Good buy

Worked perfect for checking coil on plug in a Jaguar style 4.0

The adjustable feature.

Plenty of lead to hook up properly and no problem detecting a spark.

Really nice

Excellent product

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