Air shock trouble

[smokeater1]

We have a new 2005 Minnie with air shocks. Supposed to maintain them at about 65psi. Mine were down to 40. One side pumped right up. The other valve will not accept any air. Try as I may , none will go in. The valve stem cap is the sort with a notch to let you remove the core. I used that to first make sure the core was tight. Then I backed it off just a bit, then tightened. No help.
Maybe a bad valve ?  Any other ideas ?

Thanks, everyone.

 

[King]

Try putting in a new core.  For a quick check, you could try switching the cores.
Art

 

[smokeater1]

Thanks, I'll give that a shot.....

 

[JRickey]

take the core out and try to put air in it.  If it goes in then its the valve, If not then its a kinked hose.