I replaced all the brakes front and back. wheel cylinders and calipers. The system held all the fluid before I tried to bleed to system. Now I try to bleed the brakes and I dont get much fluid coming for the bleeder screws.
You have an air block in your system. It will require two people for this tough a bleed. One person with a strong leg to pump the peddle or buy you a one man bleeder system with a pump. Oh make sure your master cylinder is full.
The correct procedure for bleeding the brakes on most RWD vehicles is to start at the furthest wheel. Do the right rear then left rear brake, followed by the right front and left front brakes. On a FWD vehicle with a diagonally-split brake system, do the right rear then left front brake, followed by the left rear and right front brake. now also I little trick of mine is to pour brake fluid into the new calipers so that their is not but room for air. and it also cuts back on the bleeding time :) and do the same for the wheel cylinders.
It sounds like you may have sucked a bunch of air into the lines when you changed the brakes. Keep trying to bleed them until you get a good stream of fluid coming out. Have someone else push the brake pedal down after you loosen the bleeder screw - ::IMPORTANT:: you MUST tighten the screw back down before they let up on the pedal, otherwise it just sucks air back into the line. So, loosen the screw, have them press down and hold it, tighten the screw, have them let up, loosen the screw, press down, until you have nothing but fluid. Repeat this process for all four brakes. All it takes is one with air in it to defeat the whole system. Normally just changing brakes won't cause this problem - taking the master cylinder cover off, and carefully pushing the cylinders in the calipers back in to allow new pads to be installed, then putting the cover back on shouldn't cause it to suck air. You might have a bad component somewhere.
