Monster MotorsportVolks Autos
Results 1 to 13 of 13
  1. #1
    Neutral

    Status
    Offline
    Join Date
    Nov 2010
    Location
    Newmarket, Suffolk
    Posts
    71

    Brakes won't bleed!!

    I fitted my new Porsche calipers yesterday and I was going to replace the brake fluid today. I sucked and pumped all the old brake fluid out. Then I put new fluid in and bled the brakes. I was using a vacuum bleeder and I started at the furthest point from the master cylinder (Rear Left) and worked my way around. I was getting fluid through the line and the level was dropping at the master cylinder but I never got a steady stream of fluid. I did every corner for almost five minutes and still there was just a little fluid coming out and some air. I put over a liter of fluid through.

    I thought maybe the vacuum bleeder was sh*t so I did it the ole fashion way. When the pedal was held down and the bleeder was opened almost nothing came out. No air, just a little dribble of fluid. The pedal goes all the way to the floor and no matter how many times I bleed it there is no gain on the pedal. Finally, I got frustrated with it and the shop was closing so I put it all back together and drove it out using the hand brake. I noticed that the brakes do barely work right at the bottom of the pedal.

    HELP!! I'm missing my trackday tomorrow because I can't get this fixed and I think I will have to rent a car on Monday.

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    1st Gear

    Status
    Offline
    Join Date
    Jun 2004
    Location
    Surrey, UK.
    Posts
    268
    Assuming you didn't drain all the old fluid, before putting the new stuff in ... any how. If you did, you've made the job 100x more difficult, as you've introduced air into the system. You may have to cycle the ABS pump too if you have done that. I believe you'll need vagcom to do that. (VAG diagnostic tool)

    You need to bleed the master cylinder as well as the calipers. Its not easy to see if you're not looking for it. Vacuum bleeders are one of the best methods. Some people have reported terminal problems with using the pump the brake pedal method, where the MC seals are damaged and a new MC is needed.

    Good luck.

  4. #3
    Neutral

    Status
    Offline
    Join Date
    Nov 2010
    Location
    Newmarket, Suffolk
    Posts
    71
    ya I thought the only way to make sure that I got all the old fluid out is to drain the entire system. I pumped the pedal to make sure all the old fluid was out. I read that I may have jacked the seals in the mc by doing that but now that I have it all back together I get a little brake pressure at the bottom of the pedal so I didn't think the seals in the mc were screwed.

    Where is the bleeder on the master cylinder?

  5. #4
    brasiliangringo's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Mar 2010
    Posts
    496

  6. #5
    2nd Gear

    Status
    Offline
    Join Date
    Oct 2012
    Posts
    488
    I think your best to just bleed new fluid in as you draw old out mate not empty the system

  7. #6
    1st Gear

    Status
    Offline
    Join Date
    Jun 2004
    Location
    Surrey, UK.
    Posts
    268

  8. #7
    3rd Gear

    Status
    Offline
    Join Date
    Jun 2012
    Location
    Redhill Surrey
    Posts
    629

    My Social Networking

    Add Grale1 on Facebook
    The mc is in the top left hand corner of the engine bay, at the bottom to the right are to billed nipple, I think they are 13mm bleed those and it should restore your brakes.

    this is what I do when I had this problem like your having. Hope this helps
    A3 1.8t AGU, fk ak street coilovers, silicone tip, silicone turbo outlet pipe, forge 007p ( yellow spring ), 80mm jetex cone filter, 3" cold air feed, 3" downpipe and de cat, R-tech stage1 map 187bhp- 227ft

  9. #8
    boostjunkie's Avatar
    Neutral

    Status
    Offline
    Join Date
    Jan 2013
    Posts
    33
    bleed the two nipples located on the master cylinder itself? i had a very similar issue an went round in circles for two hours messing around then a noticed two nipples on the master cylinder itself that i had been missing as there hard to see, as soon as i bled these i was away in minutes?

  10. #9
    1st Gear

    Status
    Offline
    Join Date
    Dec 2011
    Location
    Bedfordshire
    Posts
    127
    Quote Originally Posted by AFDanHef View Post
    I fitted my new Porsche calipers yesterday and I was going to replace the brake fluid today. I sucked and pumped all the old brake fluid out. Then I put new fluid in and bled the brakes. I was using a vacuum bleeder and I started at the furthest point from the master cylinder (Rear Left) and worked my way around. I was getting fluid through the line and the level was dropping at the master cylinder but I never got a steady stream of fluid. I did every corner for almost five minutes and still there was just a little fluid coming out and some air. I put over a liter of fluid through.

    I thought maybe the vacuum bleeder was sh*t so I did it the ole fashion way. When the pedal was held down and the bleeder was opened almost nothing came out. No air, just a little dribble of fluid. The pedal goes all the way to the floor and no matter how many times I bleed it there is no gain on the pedal. Finally, I got frustrated with it and the shop was closing so I put it all back together and drove it out using the hand brake. I noticed that the brakes do barely work right at the bottom of the pedal.

    HELP!! I'm missing my trackday tomorrow because I can't get this fixed and I think I will have to rent a car on Monday.
    Had same problem last weekend fitted 993 calipers and my problem was air the pressure bleeder fell over and pushed air in the mc I was told by another asn member to blead the calipers in the correct order and when you get to the Porsche calipers you need to bleed the inside of the caliper then the out side then last was the mc my brakes are much better now pedal still goes down a bit but I'm fitting new pads next week end so will re bleed them then hope this helps and you get it sorted

  11. #10
    Neutral

    Status
    Offline
    Join Date
    Nov 2010
    Location
    Newmarket, Suffolk
    Posts
    71
    Thanks for all the input!! I bled the mc today and there was an improvement but the pedal is still spongy. I think it's good enough to drive to a local Audi specialist so I'm goin to do that tomorrow and let them deal with it.

  12. #11
    Neutral

    Status
    Offline
    Join Date
    Nov 2010
    Location
    Newmarket, Suffolk
    Posts
    71
    Just to give a little follow up on this thread .... I'm a retard lol I took my car to the Audi specialist and they called me after one look at it and said I had put the calipers on upside down. lol aaaaa man I felt so stupid!! As soon as they said it, I instantly realized that when I was trying to bleed the calipers, the bleed nipples were facing down!! The place I bought them from said 996.352.425 was left and .426 was right. So that's how I put them on the car as the driver's left and right.

    Regardless if they were left or right .... BLEED NIPPLES ALWAYS HAVE TO FACE UP!!! Embarrassing lesson learned. The shop swapped the calipers, bled the brakes and everything works great now!! I guess the up side is that I have a set of fully functioning, bad ass Porsche brakes now!!

  13. #12
    1st Gear

    Status
    Offline
    Join Date
    Jun 2004
    Location
    Surrey, UK.
    Posts
    268
    Good have them working - the reason they're swapped round is that the calipers were fitted left hand side of the hub originally and vice-versa. No one here thought of that here ...

  14. #13
    4th Gear

    Status
    Online
    Join Date
    Feb 2012
    Posts
    726
    yeh the bleed nipes need to be pointing up but have you made sure the biggest piston is the lead piston. or you can get uneven pad wear and juddering. some porsce calipers need reversing. just fyi mate

 

 

Similar Threads

  1. Long travel on brake pedal after bleeding.. Help!
    By Rice in forum A3/S3 Forum (8L Chassis)
    Replies: 12
    Last Post: 20th November 2012, 13:19
  2. B6 S4 wheels over B5 S4 brakes - won't go?
    By Geeman in forum A4/S4 forum(B5 Chassis)
    Replies: 5
    Last Post: 26th September 2011, 10:01
  3. Bleeding Brakes
    By cclarke184 in forum A3/S3 Forum (8L Chassis)
    Replies: 0
    Last Post: 29th June 2004, 20:20
  4. Bleeding brakes A3
    By marcsnoz in forum Handling
    Replies: 4
    Last Post: 16th July 2003, 09:47
  5. Bleeding Brakes A3
    By marcsnoz in forum A3/S3 Forum (8L Chassis)
    Replies: 12
    Last Post: 16th July 2003, 09:41

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO