Why does wagon feel bouncy if nitro cells are bad?

Just wondering why a wagon might feel bouncy if one or more nitro cells were bad. I can understand why if the cell(s) were bad, the car might feel very stiff, because the nitro cells function as dampers (althought valving within the shock also has a damping effect).

Any ideas?
thanks
farrukh

[Michael K]

Keep in mind that I'm 100% unqualified to anser your question, but here goes on what I unsderstand. When the system begins to fail, something inside the "nitro cell" gives way, and, by design, the default is to full force damping. Once it leaks or totally fails, is when it would not damp enough (and you get more serious/expensive problems). Our wagon has the system. I like it.

inside the chamber is a rubber diapram, and behind the diapram is the nitrogen gas.
what happens is the rubber ruptures or develops a hole allowing the nitrogen to escape the chamber and enter the system.
the nitrogen when it is behind the rubber is what allows the system to have its dampening properties, when it is gone, the area where the nitrogen was fills with hydraulic fluid and since liquid cannot compress it gives the bouncy ride.