Okay, so my brakes have been really soft for a while. Today I went to bleed the brakes and the front lines on both sides are half air(a LOT of tiny bubbles), and the back lines are probably 99% air coming out of the bleeders. There aren't arent any leaks, and there is moving fluid, but there is way too much air. I am stumped at to what the issue is. Please help.

 

Update:

I was using a hand pump bleeder, and it wasn't strong enough to overcome the MC to pull through the rear lines. Got help to press the pedal and they bled just fine. But there was a lot of air in the rear lines