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post #1 of 13 (permalink) Old 04-29-2014, 03:26 AM Thread Starter
 
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Brake pedal won't firm up after bleeding

Hey guys. The assembly went well, no problems until I tried to stop.
I have bleed and bleed and bleed the system, replaced the master cylinder and the pedal remains spongy.

Has anyone had similar issues with the brakes.

My other 2 cars the pedal will move 1"-2" then it is like pushing on a rock. The car with the issue will push the pedal to the steering box. I have pumped 2-1/2 pints through it and no air to be seen.
It's always something. Lol Thought I might have avoided the gremlins this time.

Any insight is appreciated.



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post #2 of 13 (permalink) Old 04-29-2014, 03:04 PM
 
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Re: Brake pedal won't firm up after bleeding

That's wild, I am blending my brakes as well and have no pedal yet. I am going to go get a bench bleed kit and try to bleed the master cylinder and then hook up the lines and bleed them again and see if that gets it.

I will let you know how it comes out lol!
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post #3 of 13 (permalink) Old 04-29-2014, 06:21 PM
 
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Re: Brake pedal won't firm up after bleeding

You may need to vacuum bleed them. At the factory we had a specially made cap for the master cylinder that we hooked an air compressor to. We had a table specially made just for bleeding the brakes, there were mounts for all the calipers and a mount for the master cylinder built into the table. The entire brake system was assembled on this table before it went into the buggy. The air compressor had a regulator at the end of the line just before the fitting that hooked to the cap on the master cylinder. The air pressure was turned down to the lowest possible point on the regulator, then it was hooked to the master cylinder which was full of fluid and then we bled them as normal with the air assist. You would be surprised by the air bubbles that were forced out. We would bleed 20 - 30 sets of brakes at a time and coil the whole assembly up and stack them in a crate. as long as the master cylinder was not turned too far to the side they would stay pre bled until they were installed in the buggy. It worked pretty slick. I guess I'm getting long winded here, but my point is a vacuum bleeder might be what you need.
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post #4 of 13 (permalink) Old 04-30-2014, 03:41 AM Thread Starter
 
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Re: Brake pedal won't firm up after bleeding

Again, thanks to Mike at Red Rock I recieved some info about that set up you guys used that is what I am doing next. He has the set up you guys used. I sure hope I am surprised. It will be pleasantly at this point. It is really starting to piss me off. Lol
Thanks for the info.



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post #5 of 13 (permalink) Old 04-30-2014, 03:43 AM Thread Starter
 
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Re: Brake pedal won't firm up after bleeding

Quote:
Originally Posted by Harper View Post
That's wild, I am blending my brakes as well and have no pedal yet. I am going to go get a bench bleed kit and try to bleed the master cylinder and then hook up the lines and bleed them again and see if that gets it.

I will let you know how it comes out lol!

If it the pressure bleeder works I will bring it with me to l/s



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post #6 of 13 (permalink) Old 01-25-2015, 06:47 PM
 
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Re: Brake pedal won't firm up after bleeding

Did you flush the whole system before bleeding it?
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post #7 of 13 (permalink) Old 01-26-2015, 02:52 PM Thread Starter
 
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Re: Brake pedal won't firm up after bleeding

yes I did



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post #8 of 13 (permalink) Old 01-26-2015, 06:43 PM
 
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Re: Brake pedal won't firm up after bleeding

Have you tried checking the bleeder valve for any obstruction with the flow?
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post #9 of 13 (permalink) Old 01-26-2015, 06:53 PM
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Re: Brake pedal won't firm up after bleeding

http://www.tooltopia.com/_img/MIT/MIT7400.jpg
this is what i use on all my brakes
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post #10 of 13 (permalink) Old 01-26-2015, 11:51 PM
 
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Re: Brake pedal won't firm up after bleeding

He had the trouble 9 months ago, I'm sure its fixed.
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