 OK I need some brake help.., Dammit |
|
|
|
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. |
|
|
| 914werke |
 Jul 11 2026, 05:31 PM
Post
#1
|
|
"I got blisters on me fingers"  Group: Members Posts: 11,692 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest 
 |
So Ive done a lot of brakes, but this is the first time Ive experienced this one.
Had a OE MC fail, got my hands on one of the NEW 17mm units, Replaced F. calipers with rebuilt, + all the soft lines, the MC & the (Blue) res. line sections. All went as expected. No drama just the typical PITA installing the MC. Went about bleeding & got the pedal to near the point I thought I was done when testing a full pressure hold ...the pedal travel "breaks" & continues to the floor. (IMG:style_emoticons/default/headbang.gif) I think Ive got a leak but inspection shows its all still dry... (IMG:style_emoticons/default/blink.gif) Can a MC fail internally? Anyone witha BTDT? |
   |
 
|
  |
Replies
| SO.O.C914er |
Jul 11 2026, 07:30 PM
Post
#2
|
|
Senior Member Group: Members Posts: 1,967 Joined: 18-July 16 From: Mission Viejo Ca Member No.: 20,199 Region Association: Southern California |
QUOTE(914werke @ Jul 11 2026, 07:40 PM)  Breathe Rich breathe help is on the way! I see Superhawk has zeroed in so good hands. (IMG:style_emoticons/default/popcorn[1].gif) (IMG:style_emoticons/default/shades.gif) |
 |
|
| Superhawk996 |
Jul 11 2026, 07:56 PM
Post
#3
|
|
914 Guru Group: Members Posts: 7,942 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
|
QUOTE(914werke @ Jul 11 2026, 07:40 PM) The problem is that I was a brake engineer for 4 years and I can completely sympathize with the meme graphic I’m stealing that one. (IMG:style_emoticons/default/av-943.gif) Based on Rich’s description it almost sounds like there may be a flaw in the casting that represent the point at which the pedal fails. If there is some sort of casting flaw or surface finish problem it will eventually chew up the seal. Could also explain why he was able to get it bled initially but then it failed when trying to finish up. Said differently it sounds like it is OK initially and building pressure but at some portion of the pedal travel the seal encounters a casting flaw and then rapidly leaks down as a circuit failure. The problem is to figure it out is a (IMG:style_emoticons/default/stromberg.gif) ton of work and I’m sure Rich just wants the job done and to get paid. Who has time for trying to root cause the failure of a new part that was just supposed to work. This enshitification of everything is getting old real fast. |
|
|
|
| bkrantz |
Jul 11 2026, 08:56 PM
Post
#4
|
|
914 Guru Group: Members Posts: 8,735 Joined: 3-August 19 From: SW Colorado Member No.: 23,343 Region Association: Rocky Mountains
|
QUOTE(Superhawk996 @ Jul 11 2026, 07:56 PM) QUOTE(914werke @ Jul 11 2026, 07:40 PM) This enshitification of everything is getting old real fast. Faster than my old man aging-grouchiness. |
|
|
|
Posts in this topic
914werke OK I need some brake help.. Jul 11 2026, 05:31 PM
Ninja The aftermarket (usually Chinese) ones do all of t... Jul 11 2026, 05:51 PM 914Sixer Rich,
Did you bleed the MC before installing? I c... Jul 11 2026, 06:05 PM 914werke pressure/fails/drops to floorboard a few times.
... Jul 11 2026, 06:07 PM
Superhawk996
pressure/fails/drops to floorboard a few times.... Jul 11 2026, 06:43 PM 914werke
Rich,
Did you bleed the MC before installing? I ... Jul 11 2026, 06:08 PM 914werke RE: OK I need some brake help.. Jul 11 2026, 06:40 PM SO.O.C914er Oh and I’m saving this most interesting man.
Th... Jul 11 2026, 07:31 PM Front yard mechanic Make sure the plunger is seated properly Jul 11 2026, 08:35 PM |
3 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
2 Members: bdstone914, SO.O.C914er
|
Lo-Fi Version | Time is now: 11th July 2026 - 10:05 PM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.