Oil return testing equipment for fuel pump

The utility model discloses oil return testing equipment for a fuel pump. The oil return testing equipment is used for testing the fuel pump, wherein the fuel pump comprises a roller and a crankshaft and is also provided with an oil inlet and an oil outlet. The oil return testing equipment comprises a base plate, a pair of side plates, a camshaft, a cam and a plurality of studs; the side plates are symmetrically arranged on two sides of the base plate; the camshaft is arranged on the side plates in a penetrating manner and is mutually linked with the crankshaft through a gear; the cam is sleeved on the camshaft and is positioned between the side plates; the studs are respectively and vertically arranged on the side plates; the fuel pump is erected on the studs; the roller positioned at the bottom of the fuel pump is mutually contacted with the cam. The oil return testing equipment disclosed by the utility model fills up the blank in China that the oil mass of the fuel pump cannot be tested for a long term and