W86553 Ignition Spark Tester - Checks Spark Plug Energy without Removal for DIS & HEI Electronic Ignition Systems

I used this HEI Electronic Ignition Spark Tester to check spark at the ends of my plug wires and also the coil and distributor cap. It worked good. The spark is easy to see using this tool so also it is easy to tell if you are not seeing spark as well.The metal of the spring-clamp part is very thin in one area and the clamp is pretty small so I can see where someone could break it trying to clamp onto something too wide for it to easily fit around. I could not find a good grounding spot on my engine to clip it to so I clamped a jumper-cable onto it to ground it and that worked well for me.

Worked just as expected!

Right tool I needed and it was quickly shipped. Thank you 5 Stars.

No more sticking screwdrivers in plug wire sockets to check for spark! This unit is a positive fit in plug wire sockets and is easily grounded for hands-free testing! Also works great on testing ignition coils. I've used it successfully and recommend this product highly!

Worked as described, fast delivery

Used this ignition tester to eliminate possible causes of our hard start problems. Very easy to use after watching a couple of videos on YouTube.

The clip broke off the first time I used it so be ready with a set of jumper cables. I don’t think that was really unexpected. Otherwise it worked fine testing for spark or lack of spark on my 1998 mustang.

Used it already on lawnmower, truck to find ignition problems / lack of spark. I recommend it , good visible spark too in day light also and it easily clamps to engine or any conductive part if it .

Works as intended

Prompt shipping, item received in undamaged condition. Unfortunately I bought this to test spark plug/ignition on small air cooled engines and found it's not suitable for that as voltage isn't high enough to make it work. Might want to note that in the description. Decided to keep it anyway in case I need to test igntion on my auto. Bill