Automobile three-way catalytic blockage detection tool

The utility model relates to the technical field of detection equipment, and discloses an automobile three-way catalytic blockage detection tool which comprises a three-way catalytic converter, and a detection box is arranged on the left side of the three-way catalytic converter. The inner walls of the front and rear sides of the detection box are rotationally connected with rotating shafts through bearings and are close to the left side of the detection box; a mounting plate is fixedly connected between the two rotating shafts; and a pressure gauge is fixedly mounted on the right side of the mounting plate. According to the automobile three-way catalyst blockage detection tool, whether an automobile three-way catalyst is blocked or not can be rapidly detected without disassembly through the pressure gauge, the ball valve, the connecting hose and the stainless steel waterproof connector, the disassembly and assembly time efficiency and the labor cost of the three-way catalyst are reduced, and the blockage fau