Me vs. Brakes: The Road to a Solid Pedal |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Me vs. Brakes: The Road to a Solid Pedal |
Bwingate |
May 20 2024, 07:25 AM
Post
#1
|
Newbie Group: Members Posts: 19 Joined: 30-March 24 From: New York Member No.: 28,029 Region Association: North East States |
I have been fighting mushy brakes since I got my 914. They are better but not great. I suspect there is a lot more bleeding to do, including finding the proportioning valve to bleed.
The PO said that they had the master cylinder changed by a local "Porsche expert" I suspect it was replaced with the 17 mm master cylinder. Can I confirm with an external inspection whether it is a 17 mm or 19 mm MC? So my plan is: 1) Bleed MC 2) Bleed proportioning valve 3) Possible replace soft lines 4) Bleed each wheel again. I saw something on this site that made sense, but I had never seen it before: Clamp off all the soft lines and test the pedal. If the pedal is solid, then the problem is at the wheels; if the pedal is soft, then it is the MC. Then unclamp each wheel one at a time - the "bad" wheel will be soft, the "good" wheels will have a firm pedal. Is this a bad idea? |
Bwingate |
May 26 2024, 06:23 AM
Post
#2
|
Newbie Group: Members Posts: 19 Joined: 30-March 24 From: New York Member No.: 28,029 Region Association: North East States |
<<snip>>eaking of that, what size are the stock front bleeders? I always end up using a vise grip. Mine were 7 and 8 mm. I replaced them all with speed bleeder which are 8mm. I just re read your post... The switch shouldn't leak at all... You can replace it without losing fluid. I thought you were talking about the valve in the back. But hey, if replacing it helped, awesome! I need to replace mine, it doesn't really work. Didn't need to replace it. The switch was just a little loose. Brake bleeding has to be my least favorite routine maintenance tasks. |
emerygt350 |
May 26 2024, 11:22 AM
Post
#3
|
Advanced Member Group: Members Posts: 2,410 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
<<snip>>eaking of that, what size are the stock front bleeders? I always end up using a vise grip. Mine were 7 and 8 mm. I replaced them all with speed bleeder which are 8mm. I just re read your post... The switch shouldn't leak at all... You can replace it without losing fluid. I thought you were talking about the valve in the back. But hey, if replacing it helped, awesome! I need to replace mine, it doesn't really work. Didn't need to replace it. The switch was just a little loose. Brake bleeding has to be my least favorite routine maintenance tasks. It wasn't leaking from there right? That area should not have fluid in it. |
Lo-Fi Version | Time is now: 28th September 2024 - 09:03 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |