How to adjust the instability of byd f3r algebra

Hello, this fault is largely caused by dirty throttle. Because many cars are designed with a certain throttle opening to maintain the idle air intake, the idle air intake of the new S-series Mercedes-Benz (140 chassis) is completely provided by the throttle opening controlled by the motor driving the throttle. After the automobile has been used for a period of time, due to the poor fuel quality and the poor combustion condition of the engine itself, carbon and dirt appear near the throttle, which makes the throttle opening smaller. Normal idle speed means that the idle speed is slightly lower, but the speed correction is not obvious. At the moment of refueling and receiving oil, the engine is too slow to correct the speed, resulting in low idle speed, engine jitter and even flameout. The solution to this problem is actually very simple. Remove the throttle air inlet, pull the throttle cable, open the throttle, spray carburetor cleaner into the throttle cavity, and clean the carbon deposit near the throttle with clean cotton cloth to return to normal.