13 Dongfeng Citroen c4l 16t How high is the oil pressure?

There are two kinds of automobile fuel systems, one is full oil return system and the other is half oil return system. The difference between them is that the full oil return system has an oil return pipe on the fuel rail, while the semi-oil return system does not. The rated pressure of high-pressure oil pump is generally 3 1.5Mpa, and there are also 35Mpa. The high-pressure oil pump with stable pressure works normally under rated pressure.