Oil leakage is one of the common engine failures. It will not only cause the waste of oil, but also affect the normal operation of the engine. Therefore, once discovered, emergency treatment must be performed. High pressure tubing leaks. This is often due to the fact that the ball joints at both ends of the high-pressure fuel line have loose contact with the tight seat of the oil outlet and the concave surface on the injector. Therefore, when installing the high-pressure fuel pipe, be sure to pay attention to the tight fit of the various components, the middle can not be mixed with dirt; in the event of serious wear of the ball joint and concave surface, you can cut a small piece of copper mat from the waste cylinder mat, Then tighten with a nut. Valve cover leaks. The valve housing is made of thin steel or aluminum. During installation, if the screws are too tight, it is easy to deform and leak oil. At this time, you can remove it and gently beat it with a wooden block to restore it and then re-install it. The middle gasket is preferably lacquered on the cylinder pad to prevent damage when disassembled. Injector return oil. If the nozzle is used for a long time, the needle valve and the guide hole are exposed to increased wear gaps, and it is easy to return oil. This phenomenon can occur, on the one hand, the return pipe connected densely, so that the oil flow back to the fuel tank or fuel filter; on the other hand can increase the pressure of the injection to prevent leakage.
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