The inlet and exhaust valves need to be properly lubricated with engine oil so they can move smoothly and without wear. To prevent oil leaks, valve stem seals are fitted around the valve stem.
A valve stem seal is exposed to heat, dirt, and oil. As a result, the rubber seals will eventually wear out. This results in oil leakage. The oil can leak from the valves onto the spark plugs, potentially causing them to fail. You may also see blue smoke from the exhaust due to burning oil. The leak can also cause reduced pressure in the cylinders, resulting in a loss of engine power.
If you notice any of these problems with your car, you'll want to rule out other causes. Then, you'll want to replace the part as quickly as possible to prevent further damage. At Winparts, you can easily order a valve stem seal. You can find a suitable seal by entering your registration number.