Diagnostics of Petrol Engines video tutorial – Expert Level

In contrast to a scanner, a motor tester is a quite sophisticated and fairly flexible instrument. A scanner can reflect figuratively the things we discussed yesterday – fault codes, data stream, block programming. In other words, all scanners work in the same manner. Contrary to it, a motor tester is a multi-purpose device. You can use it to do anything, at your discretion. There are no strict methods saying “do so and no other way”. There is a huge variety of methods, you can use a motor tester as you like. And there is one more difference from the scanner. If you worked with one motor tester, then taking another one I doubt that you will be able to start using it at once. You’ll have to learn anew. You’ll have to get used to it as all devices are different. Let me remind you that we use a scanner to work with the electronic control system, while we use a motor tester to work directly with the engine. In other words, we do not address the electronic unit; instead we perform measurements immediately on the engine: open the hood, take the instrument and begin measuring something. We can assess both hardware, for example, the cylinder-piston group, passability of the exhaust system, and electronic elements, like sensors we’ve just mentioned.