Thexton THE404 Spark Tester: Enhancing 🔥 Ignition System Performance with Reliable Spark Testing Review

I bought this unit to use for cylinder pressure waveform measurements where I can use the secondary spark signal as a trigger. or perform spark tests without possibly damaging coil packs etc.

This tester works great. I use it to check the ignition spark on my Ford 8N tractor. I think it's good that you can adjust the gap width depending on the type of ignition system to be tested. There are instructions on the packaging to help you determine the correct width if you don't know what it should be. The only question I have is about durability as the ground terminal is tack welded, but so far so good.

I loved this little tool, I used it on my lawn mower and motorcycle. Little light is required to get more detailed spark information. I had a bad stator on my dirt bike and it still sparked, but the difference between the old and new stator was huge. A good spark should be a very nice blue color, I originally had a whitish color after installing a new stator, a really nice wide blue spark.

Likes: The device is unique and basically unique in its performance and operation Dislikes: I work in the automotive industry and have used it in field conditions for many years Somewhat disappointing is the fact that the Body and body construction is thinner and less robust compared to the previous design. Conclusion = It still performs and performs as advertised, so don't let the redesign put you off this tester - it's still unique and the best resource for stress testing ignition coil…

The number one reason to buy this instead of a glow tester is so you can accurately measure spark strength. I had a weak ignition coil but it worked. This tool tells me that my spark can only make half the span of a normal output. Saves me a lot of time and money as I can focus on improving spark quality. Before using this tool I thought I had bad gas, a dirty carburetor, worn rings, even a sheared timing gear. The problem with the crusher not being started has been fixed. The instructions…

I was operating a mower that ran out of oil and the engine stalled. I was pretty sure I had a bad spool. I used an engine grounded spark plug to test the coil but I must have had a bad ground. I saw it at Revain and said you can tune it for any engine you've worked on and ordered it. It came in a few days and I tried it on a mower with a bad coil. I hooked it up and my wife tried it and BINGO. I had a good blue spark. At first I had trouble seeing a spark in a well-lit garage, but after turning

I used these spark plug testers at school. they are EXCELLENT! You can set how big you want your spark to be, which will help you easily determine if your coil packs or distributors are getting enough voltage or if your spark plug is bad. In a nutshell how to use this tool: You pull off the spark plug coil/ignition wire (depending on the type of ignition system of course) and stick it into the end of the tester that looks like the top of the spark plug. The alligator clip part simply attaches…