Causes and Repairs of Injector Biting

Diesel engine nozzles often occur during use, and there are two main reasons for this: (1) The nozzles are installed with a skew, or the nozzles of the nozzles are not flat and they are deflated, causing overheating, resulting in seizures due to carbon deposits. When a deflation is found, the asbestos wire cannot be used to wrap around the outer circle of the nozzle, or the nozzle can be put to rest. To do this, before installing the fuel injectors, the cylinder head holes must be thoroughly cleaned. Use a well-spaced copper gasket. Do not place the copper gasket too high. The mounting nuts should be tightened evenly. Do not allow more than one screw at a time. One facet of the nut to prevent the nozzle from being skewed. (2) The injector hole is completely blocked and seized. After the death, the cylinder will stop working and even cause the high pressure tubing to crack and the plunger to wear quickly. If the injection hole is seized when it is opened, the engine will emit smoke and knocking, the temperature of the injector and the high pressure tubing will increase dramatically. When the high pressure tubing is loosened, gas will be removed from the tubing. If the injectors are bitten to death, most of them can be repaired. However, it is difficult to remove the needle valve. Do not force the needle valve out with a pliers or other tools to avoid damaging the injector nozzle. The oil nozzles that are killed can be installed on the injector tester. The needle valve can be pressed at a hydraulic pressure of 300-400 kg/cm2. If necessary, the biting nozzle can be used with oil. Re-press. Operate the needle in the direction of the needle valve to protect it from the needle.