The engine roared loudly and lacked power when stepping on the gas pedal.

1, step on the accelerator and find that the acceleration is not obvious, the power is insufficient, and the engine has hysterical sound. The most likely time is when the engine is hot, cold or short of oil. The causes of such problems can be divided into air filter, spark plug, ignition wire, gasoline, gasoline filter, gasifier, oil pump and other problems. Check whether the air filter is dirty, whether the spark plug is old and needs to be replaced, whether the ignition coil is broken, and whether the gasoline is dirty, such as water in the oil circuit. And check the oil pump.

2. The engine hisses, just like steam or air coming out of the engine. Generally, after hearing this sound, the engine will lose power quickly. Possible problem, engine overheating, check the cooling system. The exhaust system is blocked, and the vacuum tube leaks or breaks.

3. The engine will whir when accelerating, or it will appear when decelerating. In short, as the speed changes, the volume will also change. Possible cause: the power steering oil is insufficient and filled with oil. The generator bearing may be damaged. When there is a problem with the power steering pump and water pump, it will also produce similar noise.

When the engine is idling, it will make a clicking sound, as if something is beating the metal. You may not hear it when you speed up, which may be due to the cylinder valve. Adjust the valve to change it. Lack of oil may also cause similar problems, and the oil pressure is relatively low, so check the oil pressure carefully.

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