What are the symptoms of a faulty return valve?
1 Answers
The symptom of a faulty return valve is that the fuel pressure regulator is stuck in the closed position, which will cause excessively high oil pressure. Relevant information about engine oil: 1. Mineral oil: Mineral oil is the remaining oil after gasoline and heavy oil are extracted from petroleum. In fact, mineral oil is also a kind of natural oil with more impurities. Compared with semi-synthetic oil and full-synthetic oil, it is cheaper, has poor lubricity for the engine, and a short service life. 2. Semi-synthetic oil: Semi-synthetic oil is between mineral oil and full-synthetic oil. Semi-synthetic oil adds a large number of anti-corrosion additives to improve the stability and high oxidation resistance of the oil. 3. Full-synthetic oil: Full-synthetic oil is the best among the three types of oil in terms of quality and durability, and it is also the most expensive type of oil. Generally, the mileage of a car can reach 10,000-12,000 kilometers without deterioration. 4. The harm of water in the oil: A small amount of water entering the engine will mix with the oil in the cylinder, and the oil quality will deteriorate. Oil containing water will increase the wear of engine parts, and it is possible that the engine noise and vibration of the vehicle will increase in the future.
