Who don’t like new tools? Maybe diagnostic tools that find something that makes you have to buy more tools. Which gladly I did not need to do.
My van started working a day before I got this in.
Its a spark tester / noid light / idle air control valve tester. All for $40!
Has all the noid lights you need, test 2 kinds of idle control valve wiring, and check for spark on any engine that has a spark plug!
The extension comes in handy for todays DOHC engines. Little red light flashes everytime the ignition coil sends power to the spark plug. If you don’t have that then you have problems or bulb is burnt. Sure is better than the old way of grounding the spark plug to the valve cover and shocking yourself :P
Can also use it on small engines.