Valve Spring Compressor

An automotive engine valve spring compressor tool is a specialized tool used to compress the valve spring in an internal combustion engine. The valve spring is responsible for closing the engine's valves and providing tension against valvetrain components. When servicing the engine, such as replacing the valve stem seals or valve springs, it is necessary to remove the valve spring to gain access to these components. The valve spring compressor tool is designed to compress the spring, allowing the mechanic to remove the spring retainers, keepers, and valve spring itself without having to remove the entire cylinder head from the engine. The valve spring compressor tool typically consists of a C-shaped frame with two arms that are used to compress the spring. The tool is usually mounted onto the rocker arm stud, and the arms of the tool are tightened to compress the spring. This allows the mechanic to remove and replace the necessary components, and then release the tool to allow the spring to return to its original position.