How to solve the sudden noise of exhaust pipe caused by unstable idle speed

If the idle speed is unstable and the exhaust pipe suddenly sounds, the carbon deposit should be cleaned up in time.

Reasons for unstable idle speed:

1, too much carbon deposit on throttle and air flow meter.

Throttle and air flow meter are still relatively easy to get dirty. Nowadays, most cars are electronic throttles, and a little carbon deposition may affect them. Too much carbon deposition in the throttle will lead to the throttle being stuck, the power will be seriously reduced and the idle speed will be unstable. Dirty air flow meter leads to wrong air flow signal, and the intake determines the fuel injection quantity, which directly leads to inaccurate fuel injection, which not only increases fuel consumption, but also seriously lacks power.

2, cylinder combustion chamber, piston carbon deposition is too much.

There is too much carbon in the cylinder combustion chamber, which will have a certain adsorption effect on gasoline! So when the ignition starts, the time will be slightly extended. Moreover, too much carbon deposit will mostly form on the valve and piston ring, which indirectly causes insufficient cylinder pressure! The cold car is easy to idle when starting, but the hot car is ok.

Extended data:

Car maintenance skills:

1. Park in the shade.

Cars are as afraid of the sun as people, and long-term exposure will fade and get old. Ordinary beauty waxing has some effect, but because any car wax contains silicon, it will rust the car paint after long-term ultraviolet irradiation, leaving small black spots. Moreover, car wax itself cannot enhance hardness and ultraviolet resistance, and high temperature will be lost quickly. So when parking, try to park your car in the shade.

2. Thoroughly disinfect the interior.

In hot summer, many car owners don't often open windows. In order to enhance the wind power of air conditioners, they often only choose internal circulation. After a long time, the air in the carriage will become turbid, especially in the hot and humid weather before the thunderstorm, and bacteria are more likely to breed. At this time, the owner can choose to buy some interior cleaner or go to the car beauty shop to thoroughly clean the interior of the car.

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