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Your cart is empty.Simple, high quality tool designed to test high energy electronic ignition (HEI) systems. Simply attach plug wire to end then use built in clip to attach to ground. Tester will give you true spark performance results, helping you identify ignition anomalies that simply removing a plug and grounding it won't reveal. For use on vehicles and power equipment equipped with a high energy ignition system. Value is at the core of the OTC tool and equipment portfolio. Whether it’s a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.
KevinV
Reviewed in the United States on May 23, 2024
This is so simple to use. You can't see the spark when it's sunny outside, but you can if you shade it with cardboard or something similar. Worth the money when trying to troubleshoot ignition and/or starting problems.
Bambam
Reviewed in Australia on December 4, 2024
Recommend, shows how much spark you have from spark plug coils to spark plug. Fast delivery, good product. Happy thanks
Cliente de Kindle
Reviewed in Mexico on October 18, 2023
Hasta el momento lo eh usado una sola vez , cumple con su función .
Luis A. Poxtan Sandoval
Reviewed in Mexico on January 12, 2021
Excelente producto, muy útil
Tom S.
Reviewed in Canada on December 29, 2019
Simplistic design that offers proven results for over 40 years. Good value and a must have for your work bench.
Dan Fisher
Reviewed in Canada on November 4, 2019
Very helpful when trying to do the testing by yourself. Clip worked well.
Will
Reviewed in the United States on October 12, 2018
This tester is nice. It doesn't break the bank and if you get spark you know everything is good. It takes the guess work out of having to measure the spark etc from other testers. If you don't get spark and you have it properly grounded you know something is wrong. I read a few reviews before purchasing this at least one of which complained about the spring mechanism that clamps the tester to said ground. Truth be told on my fist use YES it did come apart because the spring popped out but it is simply because the clamp is not very big and the spring has no real groove to rest in. IMO this is not an issue as it can be put back together VERY simply and does NOT break when this happens. In fact in my case I was testing the coil on a 2002 civic and it was difficult to get it clamped to any nearby ground anyway. It worked better without the spring and me just holding it. That said I gave it 4 stars for this reason. It can be a little hard to get it grounded depending on your car and style of engine. But all in all it worked flawlessly and was a quick way to diagnose my misfire. I would say on the next version maybe make a larger clamp connection or maybe include an extension for the ground. But all in all a great cheap device!
Scott
Reviewed in the United States on June 14, 2016
I’m not a professional mechanic, but I pretend to be one.We’ve all done it before—using jumper cables or vice grips or any other means of grounding out a sparkplug to check and see if it has spark. Well, that’s basically what this thing is.I’ve only used it once (on a ’96 Toyota with coil on plugs) and it worked like a champ. I don’t know if the shape of the porcelain and the gap it has to jump affects how loud the “pop” of the spark is, but you don’t even have to see the spark to know it’s working—you can hear it.I know there are some comments about this unit not working with older style ignitions, but let’s be serious. If you’re working on a 65 Ford, you probably just hold the spark plug in your hand and crank the engine to see if it’s working. We’ve all done it….at least once to our little brother.It’s a little on the pricey side, but as long as you don’t drop it on a concrete floor or throw it against the wall, it should last you many years (or 100,00 miles, whichever comes first).Very happy with my purchase and I wouldn’t hesitate to buy again.
ConkersBFD
Reviewed in the United States on October 11, 2016
Excellent tool, I don't even consider using a screwdriver or additional spark plug to test coils, a real test anymore. Coils sometimes like to get weak over time, and cause occasional misfires. You can't really test if it's 20% weaker than its supposed to be. It will still appear to be a good spark. Unless you use the OTC spark tester, it requires the coil to output a much higher voltage. Similar to under high load conditions. Sounds like I'm trying to sell this tool, but it saved me a lot of time today on a Ford 5.4 with 4 coils that didn't pass on the tester. They all had decent spark but not enough apparently. Replaced all 4 of the ones that tested bad, and now it runs great. There's no other way I would have known that.The only issue I've had with it is the end that snaps into the spark plug wire kept unscrewing over time, a little loctite should keep it in place though. Also the porcelain can get dirty, I use brake cleaner and a clean paper towel or q-tip to wipe it clean again.I bought this about 2 years ago, it's helped me a lot but really saved me today. I paid $13.84 here on Amazon. Paid for itself over and over.Edit 2021: the clip fell off recently, since it's really only hung by a small metal tang. Problem is, the spring flew somewhere and now I can't use the clip anymore. In order to ground it, I have to attach a small jumper wire to it now. Which I had to do that occasionally anyway, since cars have so much plastic. I'll probably find another spring eventually, and cut it down if I have to.
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