1. Requirements for diesel quality 

Common rail fuel injection pressure of EFI engine than the conventional diesel engine, diesel spray injector orifice is better, more fine, impurities in easily lead to inferior diesel injector clogging. In actual use, it is difficult to meet the requirements of the quality of the fuel quality standards, in order to ensure the service life of equipment, as far as possible the use of high-quality fuel. For the oil containing more impurities, the auxiliary filtering measures should be taken before filling.

2. According to the engine requirements and the actual situation of maintenance

High pressure common rail diesel engine EFI fuel requirements to ensure high quality requirements, in strict accordance with the instructions for maintenance. The fuel filter replacement cycle is based on the use of high quality fuel to determine the time. Therefore, the actual operation of the replacement of the fuel filter can not exceed the replacement cycle, the need to replace the engine oil and replace the filter. In addition, the engine maintenance needs to do protective measures to avoid dust or debris in the replacement of the filter into the oil.

3. Use the filter to meet the quality requirements

High pressure common rail EFI diesel engine fuel system is provided with a coarse filter in the oil, two fine filter, and is provided with a filter in the high pressure fuel pump intake. High pressure common rail fuel system water separation efficiency of coarse filter requirements to reach more than 95%, more than 10 m particle filtering efficiency more than 85%, the filtration efficiency of diesel particulate filter 3-5 fine m in more than 95%.
When you buy the filter, you can not blindly consider the price of the filter to ignore the quality standards, we must choose the regular manufacturers, quality assurance in line with the quality standards of genuine filters.

4. Requirements for cooling systems and lubricants

Common rail diesel engine heat load are relatively high, to ensure the cooling effect of the engine radiator box according to the prescribed filling coolant, not entirely water. Replacement of engine oil, need to choose the high quality standard oil. Replacement of oil and filter according to the provisions of the maintenance cycle, not only replace the lubricating oil and not replace the filter.