Hey
I just put on the 240sx rear brakes.
I have it out and the brake pedal goes right to the floor.
I bled the brakes, pressure and gravity.
When I pump the brakes I get some pressure and the fluid in the rear brake part of the master goes down and then when I release the pedal the fluid goes up.
I've never seen that before.
Is there still more air or is the master shot?
New rear disc issues
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- 240z666
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New rear disc issues
Cheers
Sean
"Sometimes you're the dog, sometimes you're the hydrant."
Sean
"Sometimes you're the dog, sometimes you're the hydrant."
- GeoffM
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- 240z666
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- Joined: Tue Jul 23, 2013 9:12 pm
- Location: Winnipeg, MB Canada
Re: New rear disc issues
Yes I did.
Any other reason why the fluid would go down and then come back up?
Any other reason why the fluid would go down and then come back up?
Cheers
Sean
"Sometimes you're the dog, sometimes you're the hydrant."
Sean
"Sometimes you're the dog, sometimes you're the hydrant."
- notoptoy
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Re: New rear disc issues
Did you bleed the master on the car? Bench bleeding just doesn't seem to work for me, and I always bleed it installed. Obvious questions, but did you attempt, or actually bleed at all 4 wheels, and get fluid from each cylinder? Sounds like air compressing and releasing. Is the master new or used? IF used, yes, I would suspect the cylinder might be bad.
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.
67.5 SPL311 H20 w/5 speed
65 Impala Convertible
2017 C43 AMG
67.5 SPL311 H20 w/5 speed
65 Impala Convertible
2017 C43 AMG
- 240z666
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Re: New rear disc issues
Master was bled in the car as well. Fluid is coming out from all 4 corners. "It's coming out of wherever" trump.
It is my own master, so yes used.
It is my own master, so yes used.
Cheers
Sean
"Sometimes you're the dog, sometimes you're the hydrant."
Sean
"Sometimes you're the dog, sometimes you're the hydrant."
- notoptoy
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Re: New rear disc issues
Ok then I go with the master being toast. Look inside the driver footwell any moisture? Is there anything introduced into the system like a proportioning valve? Can you bleed that?
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.
67.5 SPL311 H20 w/5 speed
65 Impala Convertible
2017 C43 AMG
67.5 SPL311 H20 w/5 speed
65 Impala Convertible
2017 C43 AMG
- Linda
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Re: New rear disc issues
Could the bleeder on the master be slightly open?
Linda
Linda
Sadly-Linda has passed away 2022. She was the 311's den mother and drove the first Rare-Parts ball joint project. RIP.
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Re: New rear disc issues
I always use a 60cc syringe to introduce fluid from the bottom up. Use silicone tubing to hook up. Probably can get tubing at a hobby shop. Suck most of the fluid out of the master, wrap the bleed screw threads with Teflon tape and go from there. Bleed one at a time, starting at the furthest rear and working to the closest front. Don't overflow the master reservoir. That pretty much eliminates any air in the system. If the problem continues, something is most likely wrong with the master.
Mr. Wilson - Hide-ho-neighbor
1968 2000 - bought new in 1969 - damaged in a tornado years ago
1969 2000 - Disassembled road race car (it's everywhere!!!)
1967-1/2 2000 - SOLO car - only one that runs
1967-1/2 1600 - Partially restored
1968 2000 parts car
1968 2000 - bought new in 1969 - damaged in a tornado years ago
1969 2000 - Disassembled road race car (it's everywhere!!!)
1967-1/2 2000 - SOLO car - only one that runs
1967-1/2 1600 - Partially restored
1968 2000 parts car