How much is a car nozzle?

Injector 200 yuan left and right. The fuel injector is a simple solenoid valve. The electromagnetic coil is energized to generate suction, the needle valve is sucked up and the nozzle is opened. Fuel is ejected at high speed through the annular gap between the shaft pin of the needle valve head and the nozzle hole, forming mist, which is beneficial to full combustion. The common faults of the nozzle and their solutions are as follows: 1, nozzle blockage: the large plane of the needle valve body is in poor contact with the main plane of the nozzle, or the cylindrical surface of the needle valve is seriously worn, which can be dredged with a needle, and should be carefully cleaned after dredging; 2. Poor sealing: the needle valve and the needle valve body are poorly sealed, resulting in poor atomization or oil dripping of the nozzle. Fine chromium oxide or toothpaste can be coated on the sealing belt at the needle valve end, but not on the cylindrical part, and then the needle valve is inserted into the needle valve body, knocked and turned until it is closed tightly; 3, there is air: there is air in the oil circuit, just remove the air in the oil circuit; 4. Insufficient elasticity: If the elasticity of the piston spring is insufficient or the spring is broken, the spring should be replaced; 5. Piston wear: Piston wear affects oil supply. The piston needs to be replaced.