VALVE SPRING 822650

Function and technical context

The valve spring is a precision component located in the engine distribution system, responsible for maintaining the tension and tight closure of the intake and exhaust valves. It works in direct coordination with the camshaft to guarantee the correct opening and closing cycle of the valves, allowing the combustion gases to be expelled in a controlled manner and the fresh mixture to enter the cylinder at the exact moment of the cycle. Its correct operation is critical to maintain engine compression, avoid gas leaks into the crankcase, ensure optimal power performance and maintain efficient fuel consumption without unjustified increases.

When to replace this part?

This type of spring requires inspection during each seasonal maintenance check, especially in engines that are heavily used or exposed to extreme variations in temperature and salinity. Symptoms of deterioration include irregular running, progressive loss of power, increased fuel consumption, abnormal noises in the camshaft area and decreased compression measured in the cylinder. It is recommended that these springs be proactively replaced if any signs of weakening, corrosion, deformation or material fatigue are detected, as failure can cause serious secondary damage to the valves, valve guides and cylinder, resulting in costly repairs that could have been avoided with proactive maintenance.

Engine Compatibility

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers