What Are the Causes of Engine Abnormal Noise?

[ZaneAnn]

Engine abnormal noise causes: 1. Aging or loosening of engine mounts; 2. Excessive wear between pistons and cylinder walls; 3. Overly rich air-fuel mixture; 4. Air leakage in engine intake pipes; 5. Poor sealing of idle control valve; 6. Mechanical failure in the engine; 7. Excessive carbon buildup on throttle body; 8. Throttle body malfunction. An engine is a machine that converts other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, jet engines, electric motors, etc. For example, internal combustion engines typically convert chemical energy into mechanical energy. The term engine can refer to either the power generation device or the entire machine including the power unit.