From the point of view of gasoline mixed in the right proportion with air, the polarity of a spark doesn’t matter one bit, only the voltage.

The key to the spells we’ll cast here and a symptom of many things that can go wrong with any kind of machine is heat – in the wrong quantity, in the wrong place – produced by friction, by excess electric current, by flame, by acidic chemistry.

The latest addition to the Swedish-made Autodiagnos line of diagnostic equipment is the Multi-Tester pro.

It’s been a couple of years since I bailed out on wrenching and got into the detective business. You might say I traded my safety shoes for gumshoes. Please log in below to view content. If you haven’t yet, register for free access.

Often, little training time is devoted to using a multimeter to actually check the component or circuit for proper operation.

It’s not quite a digital storage oscilloscope (DSO), but it’s more than a digital Multimeter (DMM).

Each of the trainers we’ve covered or will in this series brings a unique background to the things he teaches and the way he teaches them, and none is more unique than John Anello.

One of these variable jobs is the different ways you deal with a defective CV joint.