Brake pedal goes to the floor

[cjones]

I just replaced brakes and brake caliper on both rear wheels of my 2006. I used a power bleeder to bleed the brakes and flush the entire system with new brake fluid. The system was flushed according to spec. The master cylinder was not low or got low. On a test run the brakes on the truck are working great. I noticed while sitting at a stop sign if I put firm pressure on the brake pedal I can push it down to the floor and you can here a whining noise that sounds like a power steering pump. I never lose my brakes the pedal can just be pushed to the floor if I apply a little more pressure. Any ideas? Most people I talk to said just keep bleeding the system but I have went through 2 32oz bottles of brake fluid at this point.

[sinner6.0L]

how much pressure is the power bleeder putting out? I don't really like them, they are good for exchanging the fluid but on these trucks I've always had to manually bleed them afterwards. How does the pedal feel with the truck off?

Did you put the calipers on the right sides? The bleeder screw will be on the top if it's on the correct side.

not sure about the noise you're hearing.

[cjones]

The bleeder was putting out about 15 pounds. I actually ended up doing the brakes manually after using the bleeder. I have really good brake pressure and with the vehicle turned off the pedal is really firm. I can push it a little bit but it is firm. The bleeder screws are at the top of the caliper. Some folks say I may have a bad remanufactured caliper but I do not believe that to be the case.

[rocky_k1k]

Originally Posted by sinner6.0L

how much pressure is the power bleeder putting out? I don't really like them, they are good for exchanging the fluid but on these trucks I've always had to manually bleed them afterwards. How does the pedal feel with the truck off?

Did you put the calipers on the right sides? The bleeder screw will be on the top if it's on the correct side.

not sure about the noise you're hearing.

I learned that the hard way when I first started working at a shop. Forgot to pay attention, put calipers on wrong side and could not get the brakes to work. My buddy came and looked and said "dude, your an idiot" and after a smile he pointed that out to me and I walked down the hall of shame lol.

[cjones]

Truck just returned from the Ford dealer and they say that since it is equipped with Hydro boost the pedal going to the floor (when more than normal pressure is applied) is normal. The entire brake system was checked and operating fine. See what happens for $95 an hour labor rate!

[F250SixOH]

Your power steering and braking are linked by the way. Ever notice why it is harder to turn with the brakes on then off when stopped?