What should be checked on valve springs during inspection?

During the inspection of valve springs, checking for excessive wear or distortion is crucial because the springs are responsible for maintaining the proper pressure against the valves when the engine is running. If the springs are worn or distorted, they may fail to exert the necessary pressure, leading to improper valve operation, which can cause performance issues or even engine damage.

Excessive wear may manifest as a reduction in spring height or a change in the spring's coil shape, which adversely affects its ability to compress and expand efficiently. Distorted springs can lead to symptoms such as valve float, where the valves do not close properly at higher RPMs, resulting in a loss of power and efficiency. Thus, ensuring the integrity and functionality of valve springs is essential for optimal engine performance.