The throttle is dirty. Does it cost gasoline?

There are two ways to clean the throttle: one is to clean the throttle body directly with carburetor cleaner (Huaqing), or to wipe it in the car and then spray clean fuel; The other is to use the air inlet of the engine for maintenance and cleaning, without disassembly, and spray the throttle with detergent or a cylinder with pressure to continuously add and subtract the throttle to keep the engine from stalling. There are three reasons for dirty throttle and high fuel consumption: 1. Malfunction of fuel system and fuel injector: uneven fuel injection and poor atomization of fuel injector lead to unbalanced power of each cylinder. The reasons include injector blockage, poor sealing and uneven fuel injection. 2. Fuel pressure fault: the oil pressure is too low, and the fuel atomized by the injector is in poor or linear state. If it is forbidden to spray only droplets, reduce the spray amount to make the mixture too thin. 3. The oil pressure is too high, and the actual fuel injection quantity causes the mixture to be too rich. Common causes include fuel filter blockage, fuel pump filter screen blockage, insufficient fuel pump capacity, too small elastic force of fuel pump spring, deformation of fuel inlet pipe or failure of fuel pressure regulator, collapse and blockage of fuel return pipe, etc.