Why should the throttle be cleaned regularly?

A: Because the EFI engine is in operation, a small part of the exhaust gas generated by in-cylinder combustion will generate carbon deposition at the throttle body through the intake valve and intake pipe. In addition, after the air passes through the air filter (especially the air filter that has been used for a long time), impurities will remain in the throttle. These dirt accumulate, which will form dirt on the throttle body for a long time, which will lead to the increase of throttle switch resistance and unstable engine idle speed. At this time, it is necessary to pay attention to cleaning the throttle. A: If it is a small amount of black tail gas, it is not a big problem. However, it should be noted that black smoke indicates that the engine mixture is too rich and the combustion is not sufficient. This phenomenon may be caused by insufficient air intake due to unclean air filter, or carburetor failure, or spark plug damage, ignition coil failure and so on. These problems will eventually lead to the decline of engine power, and the car will feel slow and dull when driving. Due to long-term use, the throttle valve will also scale, which will affect the opening and closing of the throttle valve and cause the engine to fail to work normally. It is recommended to check whether there is scale in the throttle cylinder when cleaning the air filter. If there is scale, you can clean it with carburetor cleaner. Throttle is the most important component in today's EFI automobile engine system. Its upper part is the air filter, and the lower part is the engine block, which is the throat of the automobile engine. Whether the acceleration of a car is flexible is closely related to the cleanliness of the throttle. The main cause of throttle scaling is oil and gas, followed by particles and moisture in the air. In other words, using qualified air filter and removing the crankcase ventilation pipe will slow down the throttle scaling. The crankshaft is built in the crankcase, and the lower part is connected with the oil bottom. The working temperature of this part is 100? ~ 180? About. Engine oil will be heated and volatilized during use. The longer the use time, the higher the temperature and the stronger the volatilization. In addition, the compressed gas of the cylinder will squeeze into the crankcase through the gap of the piston ring, so there must be a channel for the gas to escape, otherwise the oil bottom will form positive pressure. The reason why the crankcase ventilation pipe is connected to the throttle valve is the requirement of environmental protection on the one hand, and the gas is pumped out of the crankcase by using the negative pressure of intake air on the other hand. When the oily steam reaches the intake pipe and cools, the oil in it will condense on the intake and throttle valve, and then the carbon deposit in the steam will also be deposited on these parts. Because the gap where the throttle valve is opened has the largest air flow, small space and low gas temperature, this part is the easiest to condense. Therefore, how long the throttle will be stolen depends on the quality of the air filter, the brand and quality of the engine oil used, the condition of the driving section, the temperature, the working temperature of the engine, driving habits and so on. In addition, if the throttle is too dirty, it will also cause increased fuel consumption, unstable waiting speed, abnormal start and so on.