Fuel injector installation error caused by the problem? Injector gasket manufacturers for you to introduce it:

The correct installation of fuel injector is very important for a four valve engine with high pressure ejector. If the installation is not in place or is not correct, the sealing head of the high-pressure ejector may be damaged. In serious cases, the sealing surface of the oil inlet of the injector body will also be damaged, resulting in poor sealing and excessive oil return.