Engine fault detection rack

The utility model relates to an engine fault detection rack comprising a pedestal, the top of the pedestal is provided with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a support bench, the support bench is provided with a plurality of groups of connecting holes, and each group of connecting holes is provided with a group of clamping assemblies. The top of the supporting table is fixedly connected with two sets of symmetrically-distributed positioning frames, the left sides and the right sides of the two sets of positioning frames are each provided with a limiting assembly, the clamping assembly comprises two sets of symmetrically-distributed clamping pieces, and the opposite sides of the two sets of clamping pieces are each provided with an arc-shaped groove; the right end of the top clamping piece in the two sets of clamping pieces is rotationally connected with a positioning shaft. According to the utility model, the clamping assembly is arranged at the connectin