When I connected the foot pump to pump up my tyre, I noticed that air was escaping. My initial thought was that the pump wasn’t connected to the valve properly. I tried reseating the foot pump on the valve, but air was still escaping?
When I removed the air pump connection, I found that when I moved the valve stem with my finger, air would escape. Something wasn’t right?
On closer examination, I found that the valve stem had perished and there was a hole. It would need to be replaced (see the image below). It was kind of frightening… As this defect could have caused a sudden blowout of my tyre.
More detailed information can be found on this page: How to Replace a Wheel Valve Stem: (Opens in a new window / tab)