Announcement

Collapse
No announcement yet.

spongy brake pedal

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Ive just had my car up on stands, wheels off and removed calipers to try the bleeding 'nipple upper most' idea...

    This is the best thread ever!

    IT WORKED! i cannot believe the difference a few small bubbles (weirdly only out of one side) can make now they are not in my brake caliper!

    Looking at it critically, it may be the fluid hose and bleed nipples are the wrong way round because where the hose goes in was certainly higher than the nipple. it is odd though as if i were to swap them round, the hose would go through a really tight bend and really would not be right in my book. It doesn't matter though, i now have sharp brakes and with more power than i can remember them having for a long time.

    Comment


    • #17
      Blowing off dust of an old topic...


      After changing the brake lines on my Audi RS2, I bled the system with an Eezybleed kit. However, the brake pedal still feels spongy.

      I connected the brake line left front to the ABS block, but probably it was not sealed.
      After testing by putting pressure on the brake pedal, I noticed brake fluid escaping through the wrongly connected nipple (AARGGHHH...).
      Therefore I assume that air must have entered the ABS block.
      I tightened the nipple and put pressure on the brake pedal. The system seems sealed now, but the pedal feels soft and goes deep.

      On a rainy day, I went out for a drive on wet surface to activate the ABS. After bleeding again, the pedal still feels spongy.
      No air bubbles escaping at the calipers.


      What can I test next?

      - Can I activate the ABS pump through OBD and VAGCom? Please see picture of my ABS pump below.
      - Are there any other bleed nipples, apart from the nipples on the caliper?

      Other suggestions?

      Comment


      • #18
        How much fluid have you flushed through since you found the leak on the abs module since it will be mid circuit I would expect you will need to flush more fluid through too
        Greg

        S2Forum.com Administrator & Webmaster

        '93 Coupe with a few tweeks

        Comment


        • #19
          I guess about 1 to 1,5 liter through the system. Should I flush more?

          Comment


          • #20
            I think that should be enough. When you do the circuit also bleed the clutch too
            Greg

            S2Forum.com Administrator & Webmaster

            '93 Coupe with a few tweeks

            Comment


            • #21
              I thought that the clutch is on a separate circuit? Can there be a relation between a spongy brake pedal and the bleeding of the clutch?

              Comment


              • #22
                I’m pretty sure it’s on a different circuit but normally bleed when I do my brakes aswell
                Greg

                S2Forum.com Administrator & Webmaster

                '93 Coupe with a few tweeks

                Comment

                Working...
                X