What are the symptoms indicating insufficient engine power?

[VanAndrew]

When the engine experiences insufficient power, the car engine operates normally under no-load conditions, but slows down under load, resulting in weak climbing ability. The following is an introduction to related content: Engine: An engine is a machine that converts one form of energy into mechanical energy. Common internal combustion engines include gasoline and diesel engines, with gasoline engines typically converting chemical energy into mechanical energy. Engine Block: The most important component of an engine is the engine block, which serves as the framework of the engine and houses its main parts and components. Cooling is required for the cylinder and cylinder head. Water-cooled engines are commonly used in cars, featuring cooling water jackets around the cylinder and cylinder head where circulating water continuously removes heat to provide cooling.