coilover noise, jiggle thing? blown?

[S13Leprechaun]

hey dudes, i searched and didnt really come across anything like this... but i have kei office coiovers, and the driver side rear coilover, makes this wierd nose when i go over bumps, or even if i firmly press right above that wheel to compress the suspension quickly, if sounds and fells like its loose or something.. is this a possible signh of being blown? i havent gotten under there yet and giggled stuff around, but im just wondering what it could be... but sounds loose and like it is just giggling around... thanks for any helpful adcise in advance.