Diesel engine metal oil pipe pressure testing device and method

The invention belongs to the technical field of pressure testing devices, and discloses a diesel engine metal oil pipe pressure testing device and method.The diesel engine metal oil pipe pressure testing device comprises a shell, the upper portion and the front side of the shell are each provided with an opening, two movable shells are slidably connected into an inner cavity of the shell, and a distance adjusting assembly is arranged on the shell; the output end of the distance adjusting assembly is connected with the two movable shells, installation through holes penetrating through the left side faces and the right side faces of the movable shells are formed in the middle positions of the movable shells, and oil pipe locking assemblies used for positioning and locking the diesel engine metal oil pipes to be detected are arranged in the installation through holes in the movable shells. A workpiece locking position is arranged between the two oil pipe locking assemblies. A plurality of monitoring assemblies a