Bad Valve Stem?

[gadgetguy1288]

So I went on a little ride today and when I got to my destination, about 30 minutes of riding, I noticed that my back tire looked a little low. I grabbed the mini tire psi gauge from under my back seat and it was reading 0psi, I check the whole tire twice and didn't see any nails/screws/anything that would cause the tire to be at 0psi. I ran next door to the gas station and filled it back up, and checked it again when I got home and was back down to about 10psi. I'm gonna take it up to the Kawi dealer next week for the 600 mile service, but I'm thinking about just taking it up there tomorrow for the service early since I'm at 515 right now anyways.

The only thing I can figure is that maybe the valve or valve stem went bad, I listened to it after I filled it back up but couldnt hear anything. But other than that I cant see anything on/in the tire that would cause it to lose that much air that quickly.

[cuong-nutz]

You should check your tire pressure fairly frequent. These small tires don't hold much air and are more prone to losing air faster. Run some soapy water on the tire and see if you have a leak and at the valve stem and core. It could possibly be a loose/faulty valve core. It's also good habit to use a valve cap as well.