What is the reason why the fuel filler door of vv6202 1 buzzes like an airplane?

The air filter is dirty, or the spark plug is old, the ignition coil is broken, and the gasoline is not clean. The hum caused by excessive carbon deposition can be divided into engine carbon deposition, throttle carbon deposition, spark plug carbon deposition and so on. , can be cleaned in the repair shop, and the hum caused by poor filtering. The most common thing is that the air filter element is too dirty, so it can be cleaned or replaced in a repair shop. The purity of gasoline is not enough, resulting in carbon accumulation in the machine.

The reason why the gas door buzzes.

Whether there is air leakage between the exhaust pipe and the exhaust pipe joint pad. If there is air leakage, replace the interface pad directly and check whether the lower air conditioning pipeline is directly connected to the car body. If the air conditioning pipe is directly connected to the car body, it will cause * * * vibration and purr. Check the booster oil pot for aging and insufficient booster oil.

Replace or add pressurized oil to check whether the bearing is damaged. Mainly check the generator bearing and the booster pump bearing. If damaged, replace it directly. Another situation is caused by some objective factors, such as wind noise or tire noise, which are normal phenomena and cannot be solved. You can try to change a quiet tire and see if there will be a whine. Because you can't see the real car, you can't make an accurate judgment.