VALVE SPRING 24-823678

Function and technical context

The 24-823678 valve spring is an essential component of the engine timing system, responsible for holding the valve in its closed position and providing the tension necessary for the valve to close properly after each opening. This spring works in conjunction with the camshaft and valve tappet, ensuring that the valve precisely regulates the flow of the air-fuel mixture into the combustion chamber. The structural integrity of the spring is critical: if it loses elasticity or fractures, the valve does not close tightly, causing loss of compression, a drastic decrease in power and an abnormal increase in fuel consumption.

When to replace this part?

Symptoms of valve spring deterioration include irregular engine running, progressive loss of compression, cold starting difficulties, and abnormal vibration at idle speed. Although there is no universally established fixed interval, it is recommended to inspect the condition of the valve springs during each seasonal maintenance and, especially, when performing a cylinder disassembly or cylinder head overhaul. Preventive replacement during major maintenance works prevents unexpected failures in navigation and prolongs the useful life of the rest of the components of the distribution system.

Mercury/MerCruiser

Equivalent manufacturer part numbers