What is a Valve Spring?
A valve spring is a component in internal combustion engines that controls the opening and closing of valves. It provides the necessary force to keep the valves closed when they are not actively opening to allow fuel and air into the combustion chamber or to expel exhaust gases.  

How to Use a Valve Spring Compressor?
A valve spring compressor is a specialized tool used to remove and install valve springs. To use it, the cylinder head is carefully removed from the engine and secured in a suitable fixture. The compressor is then positioned over the valve spring and activated to compress the spring, allowing for the removal of the retainer. The process is reversed to install a new spring.  

Industries Using Valve Spring Compressors
Valve spring compressors are used in any industry involving internal combustion engines. The automotive industry is the most prominent, but they are also used in manufacturing plants and repair shops.

Valve Adjustment
Valve adjustment, often referred to as valve lash adjustment, involves ensuring that the valves open and close at the correct times and with the correct amount of clearance. A feeler gauge is used to measure and adjust this clearance. If not done correctly, engine performance can suffer, and the engine may be damaged.  

Engine Overhaul
An engine overhaul involves disassembling the engine, inspecting all components, replacing worn or damaged parts, and reassembling the engine. This process is often necessary when an engine has been severely damaged or has reached the end of its useful life. Overhauling an engine can be a complex process and should be performed by a qualified mechanic.