Abstract: The present invention is a tool for removing and installing valve springs on an internal combustion engine, said tool having a body with a pair of prongs at one end and a handle means for supplying a downward force at the other end. At the extreme end of the pair of prongs is a rotatably mounted shaft which has a centrally located bore, the axis of which is perpendicular to the axis of the shaft. The bore is positioned about a rocker arm stud or bolt corresponding to the valve spring to be worked upon. Located at the top of the bore is a flat face which engages a nut placed on a rocker arm stud or the underside of the bolt head of the rocker arm bolt. The tool is then centrally positioned over the valve stem such that the prongs engage the valve spring keeper. As a downward force is applied to the body member, the prongs compress the valve spring and allow the removal or installation of the valve spring keeper lock.