MTB Tyre Valve leaking?

[hansolo]

Chances are very slim that you have tubular tires (the ones glued on), the bead might just be stubborn. Perhaps post a photo of the wheel (with valve) in question?

The valve could have torn from the tube or it has a puncture and air is escaping through the easiest place.

[PhilipV]

9 hours ago, shafeekn@gmail.com said:

so itried removing the tyre to check for the tube, but the tyre seems glued to the rim? granted i didnt have the proper tools. does this mean its tubeless?

 

It might be tubeless. 

If the air escapes only when you push the valve, have you tried tightening the lock nut that secures the valve to the rim?

If it is tubeless, and the valve is a little bit loose, then it will bleed air around the valve.