Braking Problems

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  • freeride53
    R3V OG
    • Jul 2007
    • 11972
    #1

    Braking Problems

    My '91 318i has been experiencing some braking issues lately.

    Front pads are @ 45%, Rear Pads are @ 65%
    All 4 OEM rotors have good life left.

    However...

    Sometimes under hard braking, my car will sharply turn left.

    My buddy Pouya (plotfi) and I tried to bleed brakes, but had trouble on 2 corners where it wasn't bleeding, i.e. clogged.

    Could my braking issues be related to having bad hoses/lines?

    I am also experiencing a lot of noise when applying the brakes.
    If both rotors & pads have life left, what could the noise be coming from?

    Would appreciate some help in finding answers.

    Thanks!

    1991 BMW 318i (Old Shell RIP, Now Being Re-shelled & Reborn)
    1983 Peugeot 505 STI
    1992 Volvo 240 Wagon
    2009 Toyota 4Runner SR5 Sport 4WD
    Tags: None
    • Benjamin_Button
      Grease Monkey
      • Mar 2014
      • 384
      #2
      Did he try blowing out the gunk/cleaning the bleeder valves?

      Sent from my A0001 using Tapatalk
      ~Stay Thirsty~

        Comment

        • TimeMachinE30
          No R3VLimiter
          • Jun 2014
          • 3749
          #3
          What noise? Where from? The two that won't bleed? With air in the system, I could see the unequal braking...

          If pads and rotors are good, that is one thing. Calipers? Ever rebuilt? Sticking, dragging?
          Last edited by TimeMachinE30; 06-06-2015, 01:22 PM.
          ACS S3 Build / Dinan 5 E34

            Comment

            • freeride53
              R3V OG
              • Jul 2007
              • 11972
              #4
              My calipers have never been rebuilt, they are original.

              That was another possibility I was pondering, though never really could understand how caliper assemblies (altogether) could fail. Anyone care to enlighten me?

              Braking really isn't my foray :)

              1991 BMW 318i (Old Shell RIP, Now Being Re-shelled & Reborn)
              1983 Peugeot 505 STI
              1992 Volvo 240 Wagon
              2009 Toyota 4Runner SR5 Sport 4WD

                Comment

                • AndrewBird
                  The Mad Scientist
                  • Oct 2003
                  • 11892
                  #5
                  The pistons and bores can rust and the seals around them go bad. They are a wear item just like everything. Rebuilding them is easy, assuming the bores/pistons aren't pitted to hell.

                  I'd start by completely removing the bleeder and trying to get it cleared out. See if fluid will come out with the bleeder removed.

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