The fuel filler door engine has abnormal noise.

Causes of abnormal noise of refueling engine;

1. Excessive carbon deposit on engine, throttle and spark plug.

Solution: clean up the carbon deposit;

2. The air filter element is too dirty, resulting in poor filtration.

Solution: Go to the repair shop for cleaning or replacement;

3. The gasoline label is not enough.

Solution: high-grade gasoline needs to be replaced;

4. The aging of the spark plug and the idling of the car,

Solution: Need to go to the repair shop for repair.

The gas door is noisy, so it's not too big to hear in the car. Usually the sound of a valve or syringe. There is a way to distinguish, that is, give some oil when idling and see if the frequency has changed. If the frequency is constant, it is the sound of the solenoid valve. If the frequency changes, there should be abnormal noise at the valve.

The maintenance mode of the engine is:

1. Use high-quality engine oil;

2. Use qualified coolant;

3. Regularly clean the water tank scale;

4. Regularly remove carbon deposits on cars;

5. Replace the automatic filter on time;

6. Keep a reasonable speed.