What are the common engine failures?

[HaileyRose]

Common engine failures include: 1. The muffler emits rhythmic abnormal sounds or black smoke at various engine speeds; 2. The engine cannot reach high speeds, and the vehicle exhibits obvious lack of power during driving; 3. Difficulty in starting the engine, poor acceleration after starting, weak vehicle performance, occasional backfire in the carburetor or engine stalling during sudden acceleration, and high engine temperature; 4. High engine speed or unstable idle speed, even stalling after releasing the accelerator pedal; 5. Steering wheel shaking at high speeds; 6. Vehicle pulling to one side during driving. Causes of engine failures: 1. Engine washing leading to moisture in the distributor, ignition module, spark plugs, or high-voltage wires; 2. Damaged spark plugs; 3. Insufficient battery voltage; 4. Loose idle cutoff valve; 5. Clogged oil-gas separator.