Diesel Injector Fuel Injector 095000-6320 093400-9450 Denso Injector for John Deere

For carbon blockage in needle valve orifice, you can soak in oil for about 20h, and heat the oil to 150℃, and soak for about 2h. As shown in Figure 1, it is the decomposition diagram of diesel injector. Among them, needle valve couple is an important part of fuel injector. If the needle valve pair is found to be seriously worn, replace it in time to ensure good sealing of the needle valve.

The needle valve is not closed in time. In Anhui diesel engine fuel injector, there is a high pressure spring. If the spring elasticity is insufficient, the needle valve is not closed in time, resulting in increased fuel injection and decreased combustion quality. For a long time, and then appear nozzle carbon problem. The solution to this problem: timely replacement of pressure regulating spring.

 The needle valve is stuck and the couple is worn. The needle valve is stuck. In the operation of diesel engine, the needle valve of the fuel injector is stuck, the main reason is that the diesel engine load is too large, the working temperature is too high and the cold is not good, because the nozzle overheating needle valve deformation and stuck; Needle valve lift is too long; The setting time is extended. Before the setting, the diesel pressure in the inner cavity is lower than the pressure in the cylinder, so the gas will flow back from the nozzle to the inner cavity and cause the needle valve to jam; The needle valve is stuck because of the impurities brought in by diesel fuel or carbon accumulation near the nozzle; The injector spring becomes soft or the injection pressure is adjusted too low; Make the needle valve can not be closed in time, gas into the nozzle, make the needle valve burned out deformation and stuck.