rear brakes not working

[aquapool]

90 535ia
Have to say these cars have amazing brakes. Driven for quite some time and have never noticed my rear brakes are not working until I changed a flat the other day and noticed rotors are rusty. Go ahead crack the jokes.
So far All I have done is inspect for leaks. None found. Last night I bled out both lines and no air and fluid was clean. Fronts are fine w/no problems. Thought about frozen calipers but both just doesn't seem feasible. As a newbie I have searched archives and came up empty handed. Possibly a common problem? I was thinking could be in abs system?? Any help is appreciated.

[whiskychaser]

90 535ia
Have to say these cars have amazing brakes. Driven for quite some time and have never noticed my rear brakes are not working until I changed a flat the other day and noticed rotors are rusty. Go ahead crack the jokes.
So far All I have done is inspect for leaks. None found. Last night I bled out both lines and no air and fluid was clean. Fronts are fine w/no problems. Thought about frozen calipers but both just doesn't seem feasible. As a newbie I have searched archives and came up empty handed. Possibly a common problem? I was thinking could be in abs system?? Any help is appreciated.

If you have the back wheels up off the ground, what happens if you try to turn the back wheels while pressing the brake pedal?

[aquapool]

If you have the back wheels up off the ground, what happens if you try to turn the back wheels while pressing the brake pedal?

with it in neutral I could turn the wheel by hand while car running and someone holding down the brake. I only had the right rear off the ground.

[russiankid]

Either the caliper piston is seized(unlikely) or the guides are seized.

[aquapool]

Either the caliper piston is seized(unlikely) or the guides are seized.

If it is the guide bolt would it be visible that its binding up? Gonna pull it off tonight and check calipers and see if they are pressing out and check the guide bolts also.
Since the fluid is pressing through then it should be in the brake assembly itself correct?

[e34.535i.sport]

Is it coincidence that the advertisement in this thread is for brake related products... I'm not convinced.

[whiskychaser]

Is it coincidence that the advertisement in this thread is for brake related products... I'm not convinced.

I'm sure somebody takes points off my score when I make jokes like that I'd be thinking duff master cylinder, air in fluid or seized slaves. I know mine has dual circuit to the rear but not all of them do. I'd jack both sides up and remove the calipers. Put a piece of wood between the pistons and the calipers to stop the pistons coming out. Then pump the brakes and see what moves.

[e34.535i.sport]

I'm sure somebody takes points off my score when I make jokes like that

LOL! I learnt form the master!

[whiskychaser]

LOL! I learnt form the master!

Did I say it wasnt funny?

[russiankid]

You will notice that it will be hard to get the guides out if they're seized. If they are seized, I advise you to get new ones.