I've Got No Brakes ?
07-22-2003, 10:08 PM
#1
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I've Got No Brakes ?
i've Got A 1975 Vette And I Keep Having To Bleed The Brakes. The pedal Go's All The Way To The Floor Should I Replace The Master Cylinder?
07-22-2003, 10:11 PM
#2
Melting Slicks
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Location: Deltona (son of Deland and DAYTONA) FL
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Re: I've Got No Brakes ? ('75sting)
When you bleed them are you following the proper sequence? Also, are you getting fluid from all the bleeders, not just the fronts?
If you get the system bled and the pedal is firm for a while, but them get air in them again it sounds like an air pumping problem caused by the excessive runout on the rotors.
I'm sure some of the brake experts will post.
If you get the system bled and the pedal is firm for a while, but them get air in them again it sounds like an air pumping problem caused by the excessive runout on the rotors.
I'm sure some of the brake experts will post.
07-23-2003, 01:29 AM
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Burning Brakes
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Re: I've Got No Brakes ? ('75sting)
Possible that your master cylinder is leaking internally. With the brakes bled and the car stopped with your foot on the brake does the pedal remain high and hard or does it slowly sink to the floor? It it sinks to the floor it is probably the master cylinder.
07-23-2003, 10:17 AM
#4
Tech Contributor
Re: I've Got No Brakes ? ('75sting)
could be the M/C or runout. Were the rear rotors ever removed,(rivets gone) If you have a firm pedal after bleeding then loose it after a few days probably runout problem. Any signs of a leak at the M//C or calipers?
Check it out very closely. Also checkthe archives for info.
Gary
Check it out very closely. Also checkthe archives for info.
Gary
07-23-2003, 01:01 PM
#5
Drifting
Re: I've Got No Brakes ? (isosceles)
Check for leaks on all calipers. Look good.
Bleed in the correct sequence and remember the rears have both a front and a rear bleeder.
If you still get air after a couple of days suspect one or more rotors with runout. I have found that if you have >.004" runout you will suck air. Do you have a dial indicator gauge setup to check this.
Bleed in the correct sequence and remember the rears have both a front and a rear bleeder.
If you still get air after a couple of days suspect one or more rotors with runout. I have found that if you have >.004" runout you will suck air. Do you have a dial indicator gauge setup to check this.