What is the reason for the loud noise of Smecta engine?

Analysis of the specific causes of engine noise;

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. When driving, the acceleration is normal, and the ignition may be normal. However, if driving at a constant speed, it is found that the engine speed is too high, but it seems that the speed still cannot be raised. Try to check the coolant. If the oil pressure is too high or too low, check the oil pressure gauge. It is also possible that there is a problem with the ignition time setting, which will also cause such symptoms. As for the others, it may be an internal problem of the engine, such as EGR valve blockage.

3. 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.

4. The engine will whir when accelerating, or it will appear when decelerating. In short, the sound will change with the change of speed. 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.

There is a lot of noise in the exhaust pipe, which is very annoying. Sometimes similar sounds will come from the front section. The main problem is the exhaust system. Check whether the exhaust pipe is broken.

6. When the engine changes its speed, it will make a clicking sound, as if something is beating the metal. When accelerating and driving, it can be caused by Smecta, and the adjusting valve can be replaced. Lack of oil may also cause similar problems, and the oil pressure is relatively low, so it is necessary to check the oil pressure.

7. When you step on the accelerator pedal, you will hear the thump of the exhaust pipe. The sound may not be loud, and there will be no abnormal noise when driving, which will increase fuel consumption. It is recommended to check whether the muffler and exhaust pipe are damaged.

8, the engine has a kicking sound, like the sound of a pencil knocking on the table, the engine speed increases and the sound increases. Possible cause: There is dust in the engine. It is recommended to change the oil, filter the engine and clean the engine. There may be a valve problem.

9. There may be no problem during driving, and there may be a click when accelerating. The engine may overheat, the engine may have carbon deposit, and the oil is not good. It is necessary to add high-grade oil.

10, sharp noise, like squeaking, especially when the air conditioner is on, and it is more obvious when the weather is cold. Possible reasons: the drive belt slipped and the direction was hit too hard, reaching the limit. The belt is too loose, so tightening it can solve it.

1 1, when driving at a low speed, or when refueling the door, there will be a clank under the engine, especially when the weather is cold.