Engine valve problems will affect the performance of the entire engine, so what are its common specific problems?

Cylinder work is not stable:

When there is a problem with the valve, the cylinder work will become unstable, resulting in engine shaking, weak work, and may even cause the exhaust pipe blockage, and in severe cases, there will be black smoke from the exhaust.

Rattles arise:

Damaged valves may cause the engine to become unstable at idle or accelerate poorly, producing abnormal noises, which are usually caused by the valves not opening and closing properly.

Difficulty starting:

If the valve problem is severe, it may cause the engine to start hard or even fail to fire.

Air leaks and carbon buildup:

A faulty valve may also cause the car to experience air leakage or increased carbon buildup, which can affect the engine’s combustion efficiency and power output.

Valve lash problems:

Excessive valve lash can be caused by excessive wear on the camshaft or valve legs, excessive oil viscosity, and insufficient oil volume. This can cause the engine valves to sound louder, and while it won’t directly affect engine life, it can reduce engine efficiency.

Valve spring and processing errors:

If the valve springs are assembled incorrectly or if worn valve parts are used, they can cause the valve stem ends to break and damage the valve guides.

Incorrect combustion: Incorrect combustion can also lead to valve failure, which can affect the normal operation of the entire engine.