Symptoms of Aging Valve Stem Seals?

1 Answers
DanielDella
07/30/25 1:51am
Symptoms of aging valve stem seals are as follows: 1. The engine burns oil, emitting blue smoke. 2. Severe carbon buildup on spark plugs, leading to reduced engine power. 3. Decreased sealing performance results in insufficient cylinder pressure, causing reduced engine power. 4. Accelerated oil consumption, and in severe cases, directly causing engine seizure due to lubrication and cooling failure. The reasons for seal aging are as follows: 1. Assembly issues: Threads or splines were not aligned during assembly. 2. Material problems: The spring tension did not meet technical requirements. 3. Misalignment between the seal and the rotating shaft, leading to uneven wear. 4. The lip of the seal lacked lubricant, resulting in dry friction.
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