check to make sure no leaks anywhere. did you start bleeding from the furthest wheel from master cylinder too the closest.also check to see if rear brakes are adjusted correctly just click adjuster wheel till slight drag occurs if you have rear drum brakes that is.if all this is done master cylinder my be bad.
need to bleed the lines
ABS brakes are not spongy. If you have spongy brakes the reason is that there is air in the system. You need to have your brakes bled.
Brakes are bled to remove air bubbles from the brake pipes. Air bubbles in the pipes will make the brakes feel spongy and less efficient.
Spongy brakes are caused by air in the brake lines.
Could be a few causes of that symptom, but most likely air in the brake lines or moisture in the brake fluid. Start by replacing the brake fluid in the reservoir and bleeding the brakes.
Try bleeding your brakes. If there is air in the system it can give a spongy feeling to your brake pedal and require you to pump your brakes and/or put your brake pedal to the floor.
Spongy brakes on any automobile are usually caused by air in brake lines. The lines need to be bled according to the owner's manual.
Spongy brakes are usually an indication that there is air in the brake lines. It is also possible the brake fluid is low, so check that first.
you must have air in the system try bleeding all the brakes
You have to bleed your brakes, there is air pockets in the lines...
Air in the brake lines would be my first guess.
the most probable cause is, there is air in system, bleed brakes