Engine is a main element of any car. Mainly there are used petrol and diesel engines. Several years ago there appeared a hybrid car, which combines an electric drive and an internal combustion engine. It consists of the engine block and many separate parts, which are connected to the block. Usually the period of its operation exceeds the service life of the entire vehicle. Thus, the complete replacement of the engine is necessary only in rare cases. Most often fail only a few details.

Due to the process of combustion car engine converts the chemical energy of fuel into mechanical energy. In modern cars the process of combustion is performed by an electronic control system. Thus, the efficiency increases. If the engine power is reduced, it is necessary to find out exactly what point is the reason of the power loss.