🔥 JND Premium Ignition Spark Tester: The Fool-Proof Engine Diagnostic Tool Review

I have to say I never write reviews. Even if I'm unhappy. I usually send it back and get my money back. But I have to say I was really disappointed that this seemingly simple device didn't quite work. But came very quickly. But what good is it if it doesn't work when it arrives. I don't mean to be too harsh, maybe I'm just confused!

Don't waste your money on this tester. It literally fell apart at the threaded end of the cartridge. After reading other negative reviews it becomes clear that for some reason the overall rating was good. At some point the manufacturer probably changed. Others found that the indicator light was bad right out of the new packaging.

The light is very weak, it should be used in the dark, forget about using in the sun. The connector that should snap onto the spark plug won't snap, is flimsy and not well made. Even after crimping it harder, I could barely make a connection with the connector. The whole block feels cheap and light; For the price I wouldn't complain that it's only flimsy, but this product barely works. A return is also not possible! So one star for a one star product from a one star seller.

I bought this to try and troubleshoot a lawnmower that won't start. The cap that should snap onto the spark plug does not snap. Even holding it as tightly as possible, once I fixed the mower and knew it was working, it didn't light up. A complete piece of shit. To make matters worse when I wanted to return it AMAZON WILL NOT ALLOW A RETURN! I'm not sure if it's production policy or Revain, but it sucks! Revain could always come back. Not sure why they don't.

Well I got this to test my small engines. I ignored the negative reviews hoping to get a better version. Well I haven't. The rubber boot does not snap onto the spark plug and the cap holding the device has ripped off. I cut a piece of the rubber boot to snap onto the spark plug and stuck the dipstick into the cap of the unit. I glued the screw cap onto the tester to secure it. After all that, it doesn't even work. Why can't we give negative stars? I have tried. It just doesn't work. Thank god…

I bought and tested this spark tester, when it arrived everything looked fine. Due to my work schedule, it took me several weeks to try to use it. The rubber boot portion was too long and did not stretch enough to use with a Champion spark plug. Once I cut the trunk where it worked --- even the lightbulb doesn't work. The return period had already expired, so I contacted the seller - Vivitool - to buy him another bulb. They interrupted me via email and asked me to speak to Revane about it. Wow…

The light is very weak, you need to use it in the dark, forget to use it in the sun. The connector that should snap onto the spark plug won't snap, is flimsy and not well made. Even after crimping it harder, I could barely make a connection with the connector. The whole block feels cheap and light; For the price I wouldn't complain that it's only flimsy, but this product barely works. A return is also not possible! So one star for a one star product from a one star seller.

Well I took it to check my small engines. I ignored the negative reviews hoping to get a better version. Well I haven't. The rubber boot does not snap onto the spark plug and the cap holding the device has ripped off. I cut a piece of the rubber boot to snap onto the spark plug and stuck the dipstick into the device cap. I glued the screw cap onto the tester to secure it. After all that, it doesn't even work. Why can't we give negative stars? I have tried. It just doesn't work. Thank god Revain

I bought this spark tester and tested it when it arrived, everything looked fine. Due to my work schedule, it took me several weeks to try to use it. The rubber boot portion was too long and did not stretch enough to use with a Champion spark plug. Once I cut the trunk where it worked --- even the lightbulb doesn't work. The return period had already expired, so I contacted the seller - Vivitool - to buy him another bulb. They interrupted me via email and asked me to speak to Revane about it…