The other day I took one of my rear tires of my 93 civic si hatch.. About three years ago I got my calipers rebuilt. Anyways I inspected the rear caliper and disc, and found out that the inner pad isn't making contact with the disc cause the disc is rusty on that side, and shiney on the other.. Just wondering if I would change my brake fluid would it help. Do I need to rebuild the calipers again or change the master brake cylinder or what?
Thanks for any imput!

 

The fluid isn't going to help that. Sounds like it either wasn't rebuilt correctly, or the time has come to rebuild yet again. To me, I'd look at the areas there the two halves slide against each other and see if there's any lubrication at all.

 

get new calipers, thats what i did and it worked

 

I had this problem on my 92 Integra as well. It was not a seized caliper.

Check your caliper mounting bracket (CMB) and the two aluminum pad guide plates (on the upper and lower part of CMB). The pads slide back and forth on these.

Two possibilities:
1. The actual caliper mounting bracket became deformed (pads are gripped by the CMB and are unable to slide). The entire bracket must be replaced.

2. The guide plates are worn/rusted/shifted etc (pads cannot slide). Take off the plates (plates are clipped to the CMB), and sand/grind down the contact arear between the CMB and plates. You may be able to bend the plates if they are not completely flat against the CMB.

So if you caliper is not seized then check out what I described above. My caliper was stiff but movable. The caliper guide pins could be locked like others mentioned as well.