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There is UEFA EUROa strange sound when the engine starts (abnormal noise when the engine starts) With the continuous popularity and use of cars in daily life, the engine of cars has also become one of the concerns of drivers. Among them, abnormal noise when the engine starts is an important problem in car maintenance and upkeep. This article will discuss the abnormal sound when the engine starts. First of all, it should be understood that the abnormal sound made when the engine starts is not a specific sound, but a multi-possibable noise. These noises may manifest itself as rumming, buzzing, squeaking or other sounds that actually exist.In different situations, the abnormal sound when the engine starts may have different performances. The following is a brief introduction to several possible situations. 1. When the engine starts, some explosions will be heard from time to time. It may be because the idling control valve has failed. Resetting or replacing the idling control valve can solve this problem. Two. When the hiss engine starts, you will hear a noise similar to "hiss". It is very likely to be the cause of the leakage circuit of the exhaust pipe system. In this case, it is necessary to check whether the exhaust pipe is cracked or damaged. If there is a problem, it needs to be repaired in time. 3. Emergency stop noise In case of emergency stop, some noise may be made when the engine starts. This situation is usually caused by the wear or damage of some parts of the engine during an emergency stop. If this situation persists, the engine needs to be repaired in time.Four. Metal knocking sound When the engine starts, it makes a knocking sound like a "bang". It is usually caused by the gap between the piston and the cylinder block. This situation may damage the engine, so it needs to be repaired in time. In a word, different noises may correspond to different problems. Generally speaking, the abnormal noise when the engine starts needs to be checked and repaired in time. If it is not handled in time, it may cause more serious problems and even cause engine damage. Therefore, although the noise when the engine starts may only be a slight noise, it should not be taken lightly. In addition to timely maintenance, maintenance is an important part of avoiding this kind of noise. Using the car correctly and regularly replacing parts such as engine oil and air filters can reduce the chance of noise. In addition, pay attention to the cleanliness and tidiness of the environment around the engine to avoid unnecessary collisions and wear.In a word, although the abnormal sound when the engine starts is an important problem for car repair and maintenance, as long as we check and maintain in time and follow the correct vehicle maintenance methods and skills, we can ensure the normal operation of the car engine, avoid the occurrence of unexpected failures, and keep our cars in a safe and stable state. It has been running all the time.

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