Brakes problem
1995 Buick Riviera 6 cyl Front Wheel Drive Automatic 150000 miles
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I dont no how to bleed the brakes .I just put on new pads all around, 4 wheel discs, and i lost all my brake pressure and dont no why. I figure air in the brake lines.

If you didn't open a blleeder, then pump the pedal, it should come back up, if not, was the cap on the master removed before the pistons where pushed back?