Baojun 630 only ran 20,000 kilometers, and began to be unstable in algebra. Need to close the throttle, clean the spark plug and replace it with a new one. What is the reason?

Generally speaking, the engine idle instability is mostly caused by carburetor and gasoline injection device, that is, the idle speed of the oil supply system is improperly adjusted, and the fuel that can be normally supplied to the engine is too small, thus making the engine output torque too small. accord with

In this case, the idle speed adjusting screw can be readjusted to make the engine run smoothly at idle speed immediately. If you feel trouble, you can go to the repair shop and ask the maintenance staff to do it for you.

In addition to the fuel supply system, if the spark plug fails, it will also lead to unstable engine idle speed. Once the spark plug of a cylinder is abnormal, the idle speed will fluctuate greatly immediately. Check the spark plug of each cylinder. You can unplug the high voltage line of each cylinder in turn, and it is easy to find out the faulty spark plug.

In addition, if the air intake system is blocked or too dirty, it will also make the engine idle unsteadily. At this time, the carburetor cleaning agent can be injected into the carburetor.