What is the reason for the vigorous start of 20 19 Kia Chi Run?

Excessive carbon deposition, vacuum pump failure, chaotic ignition time, gear wear, wiper return, audible sound, brake pad and brake disc assembly, belt slipping. The reasons for the vigorous start of 20 19 Kia Chi Run are as follows:

1, too much carbon deposit. It may be that there is too much carbon deposit in the throttle, air intake and fuel injector, which leads to insufficient combustion. When the mixture enters the exhaust pipe, the exhaust pipe will make a sound. Just clean up the carbon deposits.

2, vacuum pump failure. The vacuum pump does not work smoothly, which leads to abnormal sound when starting. Just replace the vacuum pump.

3. The ignition time is chaotic. The ignition timing is disordered, which causes unburned gasoline to be ignited when it reaches the exhaust pipe, and the gasoline is atomized in the exhaust pipe to produce combustion noise. Attention should be paid to ignition timing.

4, gear wear. It may be the sound of meshing between the starting gear and the gear ring, indicating that the gear is aging or worn and can be replaced in time.

5. Return the wiper. It may be the sound of the wiper returning to scrape the glass after the vehicle is started. Some vehicles are equipped with induction wipers. Every time the vehicle starts, the wiper will return slightly. This is a normal phenomenon.

6. Stereo sound. Press the start button twice, and you will hear a crash in a few seconds. Just turn off the boot prompt.

7. Brake pads and brake discs are assembled together. It may be because the brake pads and brake discs will stick together after the vehicle is cleaned or parked in a damp place such as a garage for a long time, so it is necessary to separate the brake pads and brake discs in time.

8. The belt slips. Belt slippage may be due to insufficient pretension of the tensioner, or it may be due to insufficient tension due to excessive belt stretching, so it is necessary to adjust the tensioner or engine belt. Usually, the car will regularly check the fastening degree of chassis parts to avoid looseness and abnormal noise caused by bumps in daily driving. And try to use good engine oil to keep the engine in good condition. When encountering obstacles while driving, drive at a low speed to avoid bumps.