Where is the automobile valve oil seal?

The automobile valve oil seal is located under the valve spring in the engine cylinder. It only needs to be replaced when it is aging or damaged. The aging valve oil seal will leak oil, which will lead to accelerated fuel consumption and even blue smoke from the rear exhaust pipe. At the same time, engine oil may also leak into the cylinder, causing oil burning. Pay attention to the following steps when replacing the valve oil seal: 1. Prepare special tools such as lever tools and rotary tools. Lever operation requires two people to operate, while rotation operation can be completed by one person. 2. Install the timing tool, remove the timing wheel, and remove the air intake and exhaust components. Pressurize the first cylinder and pay attention to the pressure change. If the pressure is too low, the valve may get out of position and fall into the cylinder. 3. When replacing the valve oil seals one by one, carefully press the valve spring locking piece.