new mc still no brakes - Ford Powerstroke Diesel Forum
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post #1 of 20 Old 07-08-2013, 03:50 AM Thread Starter
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new mc still no brakes

i feel like i am beating a dead horse. replaced the master cylinder and the brakes were back to normal. got in it this morning to go to work and pedal goes to floor again no brakes. i am going to bleed the calipers again just make sure. anything else i should check? abs sensor?
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post #2 of 20 Old 07-08-2013, 05:08 AM
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i feel like i am beating a dead horse. replaced the master cylinder and the brakes were back to normal. got in it this morning to go to work and pedal goes to floor again no brakes. i am going to bleed the calipers again just make sure. anything else i should check? abs sensor?
Did you bench bleed the MC first before you installed it?

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post #3 of 20 Old 07-08-2013, 07:24 AM Thread Starter
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yes. and i just finished bleeding the entire system master cylinder included, and still no brakes. going to bleed it again in a few minutes. note i used a hand vacuum pump to bleed the system because i am by myself.
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post #4 of 20 Old 07-08-2013, 07:38 AM
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yes. and i just finished bleeding the entire system master cylinder included, and still no brakes. going to bleed it again in a few minutes. note i used a hand vacuum pump to bleed the system because i am by myself.
I have only heard of this but sometimes a vacuum pump doesn't always do that good of job. I've never used one as I a have always had someone around. The wife.

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post #5 of 20 Old 07-08-2013, 08:31 AM Thread Starter
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think you may be right. i used a hose from the bleed screw to bottle of trans fluid. i pumped the brakes with the engine off. had a good pedal all the way a round. then when i started the engine the pedal went to the floor and no brakes. how often does the abs get air in it?
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post #6 of 20 Old 07-08-2013, 04:32 PM Thread Starter
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bled brakes again and noticed fluid coming out of power steering pump reservoir. why?
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post #7 of 20 Old 07-08-2013, 04:35 PM
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bled brakes again and noticed fluid coming out of power steering pump reservoir. why?
Trans fluid I hope. Did you or someone turn the steering wheel while you were bleeding the brakes?

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post #8 of 20 Old 07-08-2013, 04:37 PM Thread Starter
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yes i think i did out of frustration
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post #9 of 20 Old 07-08-2013, 04:38 PM
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yes i think i did out of frustration
That's normal when the truck isn't running.

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post #10 of 20 Old 07-08-2013, 04:54 PM
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You may need to have someone help you or just let them gravity bleed for a while.


- Chris

2006 F250 CCSB Lariat
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