What are the main causes of engine knocking?

[StArianna]

Engine knocking is mainly caused by: 1. Excessive carbon deposits in the engine; 2. Poor engine lubrication conditions; 3. Bent or twisted engine connecting rods; 4. High speed and high cylinder pressure. An engine is a machine that can convert other forms of energy into mechanical energy. Engines can be used as power generation devices or refer to the entire machine including the power unit. Types of engines include internal combustion engines, external combustion engines, gas turbines, and electric motors. Solutions for engine knocking: 1. If knocking sounds occur in low-temperature environments after starting the car and disappear as the temperature rises, this type of knocking can be temporarily ignored, and the vehicle can continue to be driven; 2. If connecting rod deformation is found, it should be replaced as much as possible.