Brakes won't bleed?
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Junior User
Joined: Apr 2010
Posts: 70
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From: Sacramento
Brakes won't bleed?
Ok so i lost my brakes driving home yesterday so i just tried to bleed my brakes because the front (smaller) reservoir was empty of all fluid. I bled the passenger side rear first, then the drivers side rear. Then i moved to the front and neither side would produce any fluid. What am i doing wrong. Its a 74 f250 camper special ranger xlt with a 460 c6 and it has power front disc brakes. All stock. Any help is super appreciated seeing as this is my daily driver and i need brakes haha.
Cargo Master
Joined: Apr 2009
Posts: 3,038
Likes: 4
From: South west Idaho
Good information, I allways have trouble with that little job. I never had anybody tell me about how to reset it. Brake shops just say " we can fix it" . 
Posting Guru
Joined: Aug 2010
Posts: 1,761
Likes: 8
From: Knoxville, TN
If he was able to bleed the rear, that's not likely the problem, since the smaller front reservoir is for the rear brakes, and the valve would be moved to give all the fluid to the front already.
I'm going over the brakes on my '74, and I found that my front bleed screws were plugged up - had to remove them and clean out the holes with a dentist-style pick. (Could just replace 'em, but I didn't need to.)
I'm going over the brakes on my '74, and I found that my front bleed screws were plugged up - had to remove them and clean out the holes with a dentist-style pick. (Could just replace 'em, but I didn't need to.)
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Junior User
Joined: Apr 2010
Posts: 70
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From: Sacramento
Ok so after a few weeks still no brakes. I made a video to help try and describe the problem in better detail. Hopefully this will help you guys to help me haha.
<embed src="http://www.youtube.com/v/06uRlg-MQ2U?fs=1&hl=en_US" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="385">
<embed src="http://www.youtube.com/v/06uRlg-MQ2U?fs=1&hl=en_US" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="385">
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Certified Thread Hijacker
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Sounds like the front calipers could possibly be mounted on the wrong side and upside down.
Josh
Josh
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MSEE
Joined: Apr 2004
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From: Austin, TX
To the OP: if the master cylinder ever takes in air (which can happen if you lose all the fluid), you may need to bench bleed it again. Are you positive that the master cylinder is actually delivering fluid? It's possible that the master cylinder is bad, and won't deliver fluid - or it's full of air, and can't push any fluid out. Either one of those would describe the pedal travel you've shown. If the front reservoir is puking fluid all over, it could be a sign of a defective master cylinder, or air in the lines. Master cylinders can come bad out of the box, even new ones. Remanufactured ones especially.
I second Josh's note about the calipers; I've seen another person have that same issue on here once before.
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Junior User
Joined: Apr 2010
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From: Sacramento
Thanks for the replies. Tomorrow i will do the following:
Check the calipers to make sure they are correct.
Take off the MC and return it ( i got a LTW)
Bench bleed it and re install it.
Bleed all 4 corners again.
If this does not fix the problem i don't know what else to do. Thanks a lot for the help. I'll keep ya'll posted.
Check the calipers to make sure they are correct.
Take off the MC and return it ( i got a LTW)
Bench bleed it and re install it.
Bleed all 4 corners again.
If this does not fix the problem i don't know what else to do. Thanks a lot for the help. I'll keep ya'll posted.
Senior User
Joined: Oct 2010
Posts: 173
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From: British Columbia, Canada
The smaller reservior is the rear brakes, not the front. My 77 F150 had rear brake issues when I bought it. Inside the frame rail the dirt was so heavy that it had made a pin hole in the rear brake line. So small that u couln't see it until I climbed under and inspected the line front to back and found this pinhole that made a fine stream that was evident after cleaning this area to see the stream. Replaced the rear brakeline from the prop. valve ,back.
Posting Guru
Joined: Aug 2010
Posts: 1,761
Likes: 8
From: Knoxville, TN
Yeah, that's what I was trying to say: the smaller reservoir, which on the master cylinder is towards the front of the truck, is for the rear brakes. Thanks for clarifying.
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