Reasons for abnormal noise in the fuel water separator:
1. The function of the fuel water separator is to separate the water by using the gravity difference between the fuel and the water before the fuel enters the fuel injection pump;
2. The warning light of the fuel water separator is always on, which is generally not an accessory problem. After the fuel water separator has been used for a period of time, there will be accumulated water inside. When the water reaches a certain limit, the indicator light will be on;
3. When the fuel water separator warning light is on, you can unscrew the drain valve under the fuel water separator tank to drain the water. At this time, the liquid level of the fuel water separator drops below the sensor, and the indicator light goes out naturally;
4. If the water under the fuel water separator tank is drained, the indicator light is still on, and the fault may be on the fuel water separation sensor. Use a multimeter to check the voltage of the fuel water separation sensor. Normally, it should be 12V and 5V. If it is abnormal, it is not a circuit problem or poor contact, and then replace the fuel water separation sensor.

Drain water from fuel water separator:
1. Just unscrew the small cap under the filter;
2. The function of the diesel filter is to filter out harmful impurities and moisture in the fuel system, protect the normal operation of the engine, reduce wear, avoid clogging, and increase the life of the engine;
3. The filter element of the diesel filter is mostly filter paper, and some are made of felt or polymer materials. The filter element of the gasoline filter mostly uses filter paper, but also uses nylon cloth and polymer materials;
4. The high-quality diesel filter can effectively block the dust and moisture contained in the diesel, and can extremely effectively extend the service life of the fuel injection pump, diesel nozzle and other filter elements.