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What Causes Air Leakage from the Valve Core After Inflating a Tire?

1 Answers

VanCollin

07/30/25 6:37am

Tire valve leakage may be caused by aging of the valve stem, which is mainly manifested as surface cracking, deformation, or hardening. If aging occurs, the valve stem should be replaced promptly. It could also be due to poor sealing between the valve stem and the wheel hub, leading to air leakage. Depending on the situation, the valve stem or wheel hub may need to be replaced. Another possibility is damage to the valve core, which may require replacement of the valve core or the entire valve stem assembly. More relevant information is as follows: 1. Valve Core: The valve core is installed inside the main body of the valve stem and functions as a one-way valve to prevent air leakage from the inner tube and to check and adjust the air pressure. To prevent clogging and air leakage in the main body's inner hole, a valve cap is used to seal the valve stem's inner hole. The valve cap can also serve as a tool for installing and removing the valve core. 2. Valve Stem: The rubber of the valve stem may age after prolonged use, leading to air leakage. Driving with insufficient air pressure can cause damage to the tire. Therefore, the valve stem should be inspected regularly.

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