I have a 90 civic si hatch with the street performance H&R coil over. Notice it about two weeks ago while driving it squeaks when the suspension is compress. thought it was something loose tighten all bolts still the same. I cut some inner tubes off and old bike and placed it along the coil or seat on the shock where you adjust the height to see if that was causing it but no luck. Only thing that I can think of now is that the shock is out but it still rides the same as before.

You guys think that it may be some other suspension components that is causing the noise.