Is It Normal for a New Car's Engine to Be Noisy?

[LaPaislee]

It is not normal for a new car's engine to be noisy. The reasons include: 1. The engine oil viscosity is too high; 2. The belt is loose; 3. The water temperature is too high; 4. The throttle or fuel injector is clogged. An engine is a machine that converts one form of energy into another, typically converting chemical energy into mechanical energy. Methods to address a noisy engine include: 1. Installing high-quality sound-absorbing foam materials under the engine hood to reduce vibrations caused by the hood; 2. Inspecting or replacing the intake and exhaust pipes; 3. Using insulated pistons to increase the combustion chamber wall temperature, shorten the ignition delay period, and reduce combustion noise in direct-injection diesel engines with space-atomized combustion systems.