Check the vehicle's engine: It should run smoothly and not make any unusual noises.
This description provides instructions to check the engine of a vehicle. It explains that the engine should run smoothly and not make any unusual noises. This check should be done to ensure that the vehicle is in good working condition.
An internal combustion engine is a heat engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of the high-temperature and high-pressure gases produced by combustion applies direct force to components of the engine. The force is typically applied to pistons, turbine blades, a rotor, or a nozzle. This force moves the component over a distance. This process transforms chemical energy into kinetic energy which is used to propel, move or power whatever the engine is attached to.