runderwo
Well-Known Member
- Joined
- August 4, 2009
- Messages
- 141
- Reaction score
- 3
- City, State
- Tulsa, OK
- Year, Model & Trim Level
- 91 XL
This is driving me nuts. I had to replace my front to rear brake line due to rust about a month ago. Since then I have tried everything I can think of to get the air out of the brakes but I still have a mushy pedal that goes to the floor under vacuum boost.
I have:
Bench bled 2 master cylinders
Bled all 4 wheels in the correct order with speed bleeders
Bled all 4 wheels with standard bleed screw method and a helper
Knocked on the calipers with a hammer
Tried to get the RABS to pump by turning the rear wheels with the motor on while pressing the brake
Fluid runs clean/clear at all 4 wheels with only a few small bubbles.
After all this, if I put my head between the driver's tire and the motor, I can hear gurgling in the brake lines between the master cylinder and the combination valve when the pedal is depressed.
As a last resort I wanted to try gravity bleeding, but I can only get a drip out of the front wheels' bleeders, at the rear wheels there is no action, probably because of all the humps in the brake line.
I will gravity bleed the fronts anyway when the weather gets better. I just wanted to know if anyone had any thoughts on what I am doing wrong.
I have:
Bench bled 2 master cylinders
Bled all 4 wheels in the correct order with speed bleeders
Bled all 4 wheels with standard bleed screw method and a helper
Knocked on the calipers with a hammer
Tried to get the RABS to pump by turning the rear wheels with the motor on while pressing the brake
Fluid runs clean/clear at all 4 wheels with only a few small bubbles.
After all this, if I put my head between the driver's tire and the motor, I can hear gurgling in the brake lines between the master cylinder and the combination valve when the pedal is depressed.
As a last resort I wanted to try gravity bleeding, but I can only get a drip out of the front wheels' bleeders, at the rear wheels there is no action, probably because of all the humps in the brake line.
I will gravity bleed the fronts anyway when the weather gets better. I just wanted to know if anyone had any thoughts on what I am doing wrong.