Sorry to hear you're having hassles with your brakes...
When you changed your pads, did you;
1. give your old calipers a good scrub off with a wire brush, ESPECIALLY those sections old the caliper along which the new pads will slide in? If not, and there is rust, dirt, etc sitting there, this will prevent the pads from sliding nicely along up against the disc; I have found from my experience in the past that some pattern parts have their backing plates not the EXACT size as your originals, so when you fit the new ones, try to make sure they slide nicely along in the caliper;
2. I recently saw from a PAGID brochure (guys who are brake specialists) that they apply a special grease to the pad guide surfaces to make the pads slide nicely along (see here: http://www.pagid.com/en/marketing-ma...-best-practice
Maybe this is your problem?
I hope you come right.
All the best and let us know how you go.
After changing the brake pads, the brake pedal was all spongy, goin all the way down and not braking properly(full travel to brake just slowly). The pads seemed to be properly inserted, and afterwads, i changed the fluid and bled the system , but the problem persisted. after reinstalling the previous pads, the brakes seem to be owrking fine again. Any ideas as to why this happens?
I should al;so mention that visualy at least the entire system looks fine(no leaks)