Leaky Valves?

Alright everytime i parkup the mazda and go to drive it again i see that the left rear airbag is fully deflated? does this mean leaky valves and how do i fix it? it happens when im driving but it is a very slow and gradual leak (have to keep popping it up every 5minutes or so to keep it even).

How do i fix these leaky valves/bags/lines?

ANY HELP APPRECIATED

Thanks guys

assuming your running a 1 way electric valve (example: smc 3/8 gold valve) SImply take out the 4 body bolts of the valve, split the case and wipe the rubber diaphram down and clean it. Might as well do this to all your valves, then OIL your system. These valves need to be oiled about once a year I guess. I use Marvel Mystery Oil. Also be sure to keep up on your water trap, rust builds in the tank and then sends rust flakes into your valves causing them to leak.

Before you go pullin valves apart, jus take soapy water and spray it on all the fittings. . . If it starts bubbling, then theres a leak. . . re seal it. . If that doesn't fix it, then do the valves. . . Or do it all, jus to be sure

-Josh