Brake woes!, Not whoa! |
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Brake woes!, Not whoa! |
80cap |
Jan 22 2017, 08:36 AM
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#1
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Member Group: Members Posts: 317 Joined: 6-February 15 From: ohio Member No.: 18,405 Region Association: None |
I read all the brake bleeding threads and I am still not getting a pedal.
I have the pressure bleeder, PMB,rebuilt calipers,new stainless lines, 19mm master cylinder, so all should be good to go. The only part I haven't replaced is the pressure regulator. Today we are going to try again, so any ideas from the members is more than appreciated. I been doing brakes a long time and have never had any problems before. Just never did a 914 before. Brian (IMG:style_emoticons/default/headbang.gif) |
zach914v8 |
Jan 22 2017, 08:49 AM
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#2
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Member Group: Members Posts: 216 Joined: 26-November 10 From: Houston Member No.: 12,426 Region Association: Southwest Region |
I read all the brake bleeding threads and I am still not getting a pedal. I have the pressure bleeder, PMB,rebuilt calipers,new stainless lines, 19mm master cylinder, so all should be good to go. The only part I haven't replaced is the pressure regulator. Today we are going to try again, so any ideas from the members is more than appreciated. I been doing brakes a long time and have never had any problems before. Just never did a 914 before. Brian (IMG:style_emoticons/default/headbang.gif) It's not a URO master is it? |
80cap |
Jan 22 2017, 09:31 AM
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#3
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Member Group: Members Posts: 317 Joined: 6-February 15 From: ohio Member No.: 18,405 Region Association: None |
I'm not sure if it is a uro part. How can I identify it or not. I bought it off Ebay I think.
Brian |
zach914v8 |
Jan 22 2017, 10:03 AM
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#4
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Member Group: Members Posts: 216 Joined: 26-November 10 From: Houston Member No.: 12,426 Region Association: Southwest Region |
If it was cheap (like65-90) and it was from ebay, odds are its a URO. I have had a bad one out of the box before for a jag. I don't trust URO parts. The master may or may not be your problem. One way to find out is crack one line barely open at the master and have someone in the car slowly push the brake pedal to the floor. If fluid comes out in decent volume on each port your master is probably ok. Once the person in the car gets to the bottom of travel have them hold the pedal down and re sung the line you are working on. If you re snug with the pedal up you can capture air.
Also, do this with each line a few times. The master could be good but maybe air is trapped in the in it. You can do this process a few times and see if and bubbles come out. I am sure someone here will chime in with more knowledge. Brakes can be tricky on these cars. |
80cap |
Jan 22 2017, 10:14 AM
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#5
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Member Group: Members Posts: 317 Joined: 6-February 15 From: ohio Member No.: 18,405 Region Association: None |
Zach
It wasn't cheap,I will try checking the flow again today. Brian |
Boomingbeetle |
Jan 22 2017, 10:56 AM
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#6
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Member Group: Members Posts: 118 Joined: 1-November 16 From: Orange County Member No.: 20,556 Region Association: Southern California |
Ive never done the master in my teener, but I've done plenty of aftermarket masters in old muscle cars. The problem 75% of the time is the pushrod into the master is not the right length. Especially if you're going from a single reservoir to dual zone (front/rear).
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Eric_Shea |
Jan 22 2017, 11:30 AM
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#7
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PMB Performance Group: Admin Posts: 19,275 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
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80cap |
Jan 22 2017, 04:31 PM
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#8
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Member Group: Members Posts: 317 Joined: 6-February 15 From: ohio Member No.: 18,405 Region Association: None |
I have thrown in the towel! I must have a bad master cylinder. I will give PMB a call in the morning.
90% done 90% to go. (IMG:style_emoticons/default/beer3.gif) |
motorvated |
Jan 22 2017, 05:11 PM
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#9
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Member Group: Members Posts: 279 Joined: 13-February 13 From: Colorado Member No.: 15,519 Region Association: Rocky Mountains |
I have thrown in the towel! I must have a bad master cylinder. I will give PMB a call in the morning. 90% done 90% to go. (IMG:style_emoticons/default/beer3.gif) I agree with Boomingbeetle. I swapped my 17 mm mc with a 19 mm and bled, and bled, and bled ... until I adjusted the pushrod going into the new mc. Once I did that, I had a firm pedal. You might want to try that before claiming that your mc is bad. Just my 2 cents. |
80cap |
Jan 23 2017, 08:06 AM
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#10
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Member Group: Members Posts: 317 Joined: 6-February 15 From: ohio Member No.: 18,405 Region Association: None |
I have thrown in the towel! I must have a bad master cylinder. I will give PMB a call in the morning. 90% done 90% to go. (IMG:style_emoticons/default/beer3.gif) I agree with Boomingbeetle. I swapped my 17 mm mc with a 19 mm and bled, and bled, and bled ... until I adjusted the pushrod going into the new mc. Once I did that, I had a firm pedal. You might want to try that before claiming that your mc is bad. Just my 2 cents. I'll give it a try Brian |
BillC |
Jan 23 2017, 09:33 AM
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#11
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Senior Member Group: Members Posts: 536 Joined: 24-April 15 From: Silver Spring, MD Member No.: 18,667 Region Association: MidAtlantic Region |
I recently had a problem with an NOS 17mm master cylinder that went bad just sitting on a shelf -- it wouldn't pump up, and then later started leaking from the rear end (the end where the pushrod goes). Replaced it with a new one from PMB, and no more problems.
On a bittersweet note, I've gotten pretty good at installing the feed lines and grommets on top of the MC. (IMG:style_emoticons/default/headbang.gif) |
TravisNeff |
Jan 23 2017, 05:16 PM
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#12
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region |
Skip the motive bleeder and get a 2nd person to pump the brakes while you bleed.
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