I have a 1999 Ford Ranger 4.0L. I changed my brake pads. I let out some fluid so that I could push the pistons back in. How long and how much pumping of the brake will it take to get the pressure back up?
When you let the fluid out, this let air in. You will have to bleed the brakes now. For future reference, you never have to let fluid out to get the piston back in under normal conditions. never, ever. You use a C-clamp or brake piston tool. Like the one pictured above. You should only need to bleed at the location you let the fluid out, so if you did this on both sides then you will need to bleed both sides.