brake pedal goes to floor with squishy sound.

System is full of air! .... Bleed the brakes .. Then bleed em bout 10 more times!! .. Check for leak... Bleed brakes some more! .. The master cylinder probably was not correctly bench bled to start with and now think about all that volumn in the parts that were replaced .. That was all air before the brakes bleeding started.. It's just going to take a while to purge that much air out! .. When brake pedal travel is normal, not going to the floor > The "squishy sound" will no longer be heard!

Is the squishy sound heard inside the vehicle?...If so, possible air leak in the brake booster....