Squishy brakes
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Squishy brakes
everyone helped me with my last problem so I’m hoping someone can point me in the right direction with my squishy brakes. We did a disk convertion in the front with new lines and good calipers. Rear drums are new and adjusted. Probably went through a gallon of brake fluid bleeding it and still squishy. Any ideas?
Lead Gopher
Joined: Aug 2012
Posts: 10,043
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From: Seattle
Did you bench bleed the master cylinder? If not that can cause it.
Here's a Wikihow on it.
https://www.wikihow.com/Bleed-a-Master-Cylinder
Chad
Here's a Wikihow on it.
https://www.wikihow.com/Bleed-a-Master-Cylinder
Chad
Lead Gopher
Joined: Aug 2012
Posts: 10,043
Likes: 1,595
From: Seattle
Incidentally, that article mentions how a mechanic would use a vacuum bleeder. Those or a pressure pot can sure help.
I like my pressure pot but they are not cheap. You might be able to rent one or the other, too.
Chad
I like my pressure pot but they are not cheap. You might be able to rent one or the other, too.
Chad
Logistics Pro
Joined: May 2015
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From: Tri Cities, TN
What differential/proportioning valve did you use? The stock Ford ones have a bleeder valve on them that must be pulled out or pushed in, in order to get fluid to flow to the front brakes. You will still get fluid but you may never get all the air out unless that metering valve is held open.
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So I did bench bleed the master but didn’t realize I had to mess with the proportioning valve. The convertion used 78 f100 parts. I’ll try that. How can I tell if I have a bad valve?
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Logistics Pro
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Mountain Pass
Joined: Nov 2013
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From: Mason City, IL
Check out the rod length on the power booster. It might not be long enough to go all the way into the master cylinder. Especially if your power booster is aftermarket. That was my issue after doing disc/drum total replacement from drum/drum. I did all new to include lines, calipers rotors, etc.
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