Revving an engine is the act of increasing the engine’s speed without applying a load to the output shaft. This is typically done by pressing the accelerator pedal while the vehicle is in neutral or park. Revving an engine can be done for a variety of reasons, such as warming up the engine, clearing out the cylinders, or simply for fun.
There are some benefits to revving your engine, such as increasing the flow of oil and coolant throughout the engine, which can help to extend the life of the engine. Additionally, revving the engine can help to clear out any carbon deposits that may have built up on the spark plugs or valves. However, it is important to note that revving the engine too often or for too long can actually damage the engine.