What is the function of valve stem seals?
2 Answers
The function of valve stem seals is to prevent engine oil from entering the combustion chamber. Below are the specific functions of valve stem seals and symptoms of their failure: The functions of valve stem seals are as follows: Prevent engine oil from entering the intake (exhaust) pipe, avoiding oil loss. Prevent leakage of the air-fuel mixture and exhaust gases. Prevent engine oil from entering the combustion chamber. Symptoms of valve stem seal failure are as follows: Oil entering the cylinder along the valve guide causes accelerated carbon buildup and oil fouling on spark plugs, leading to poor performance or non-operation, resulting in reduced engine power. Valve tilt causing poor cylinder sealing, leading to decreased cylinder pressure and weakened engine power. Accelerated oil consumption, which can easily cause engine damage due to oil shortage during long-distance driving.
The valve stem seal plays a crucial sealing role in a car engine. Its primary function is to prevent engine oil from leaking along the valve stem into the combustion chamber, avoiding oil being burned at high temperatures. Otherwise, oil consumption would increase significantly, blue smoke would appear in the exhaust, and thick carbon deposits could accumulate, affecting engine performance and lifespan. I know that once this component ages or gets damaged, common symptoms include increased oil consumption, smoke during cold starts, and reduced engine power – it's heartbreaking to hear. Therefore, it's best to pay attention to the seal's condition during each maintenance check. Don't wait until minor issues turn into major repairs to take action, as it could lead to unnecessary expenses. Additionally, choosing high-quality engine oil can reduce the burden on the seal, extending its service life and making the car run smoother and more worry-free.
