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That is very often a result of either air in the brake lines, as when you forget to fill the master cylinder, or when the brake mechanisms on the 4 wheels are set to different tolerances.
If you are repairing spongy brakes you want to inspect for any leaks in the lines first. Look for oily spots on the break lines and callipers. Check under the master cylinder as well. If you are sure...
Unfortunately there are several possibilities. First off I'd check brake pad and / or shoe thickness. Worn pads / shoes can cause this as the caliper pistons have to move to the nearly full extent of...
Pads are worn out, and your Mater Cylinder is possibly bad. Inspect the brake pads and replace as necessary. Inspect the rotor for damage and have it turned or replace it. If after replacing the...