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Thread: I'm Stumped: Low Brake Pedal

  1. #101
    Join Date
    Jun 2004
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    NNJ
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    04 330xi, 98 M3/4/5
    Quote Originally Posted by PbFut View Post
    Nope...Lube only causes more problems. Lube softens the rubber and pad taper will result even at moderate pressures. Read the BMW service manual. No lube for a reason.
    Link to where it says this?
    [2004 330xi/6] Orient/Natural :: 117-142k :: ZSP :: ZPP :: ZCW
    [1998 M3/4/5] Cosmos/Black :: 113-125k :: TCKline D/A (500/600) :: GC Plates :: RD Sways :: GC Rear Arms :: ZHP Rack :: 3.64 Diffsonline :: PF FCAB :: BW RTAB :: AKG Subframe :: TMS Pulleys :: AA & Borla :: XBrace :: TRM C2s :: BW lines :: DTC60 :: Safety Equipment

    Past:
    [1995 M3] Avus/Dove :: 141-242k :: S52 OBDI :: M50 manifold :: 3.5 HFM :: Turner Chip :: XBrace :: SS Lines :: Turner RTABS :: Vogtland CS :: Bilstein Sport :: Z3 rack
    [1999 M3] Cosmos/Black :: 65-87k :: TCKline S/A (400/500) :: Turner plates :: UUC Front Sway :: PF RTABs :: AA Intake :: Borla :: XBrace :: TRM C2s :: CL RC6E :: Safety Equipment
    [1993 325is] Brilliant/Black :: 135-139k :: Bilstein sports :: Eibach sways and springs :: Dinan camber plates and chip :: Borla :: LSD

    [1983 320i] Safari/Brownish :: 219-242k :: homebrew CAI :: some rust :: multicolor body panels

  2. #102
    Join Date
    Sep 2008
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    NS, Canada
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    E36 M3
    Quote Originally Posted by MJockey View Post
    Thanks to this thread I was able to fix my low-ish brake pedal.
    I connected my pressure bleeder, activated the ABS pump for 15 sec with the bleed screws closed. Then one by one, I open the bleed screws and activated the ABS pump while the screw was open. This was followed by a standard 2 person bleed that I always do. I must of had some air in the ABS system.
    I'm gonna try this tonight. I've always been dealing with a bit of unwanted pedal travel after installing 2 front calipers, but I never tried cycling the ABS with the bleed screws open.

  3. #103
    Join Date
    May 2013
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    SoCal
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    1997 328is
    Noticed that there is an air rushing noise when I step on the brake pedal, kind of like a bicycle pump. Is that normal, or is it a bad booster? Maybe a vacuum leak?

    Edit: found an excellent link. Someone did bench bleeding of the master cylinder, diagnostic laptop bleeding, and checked the pads, discovered it was leaking bleed screws: http://www.eatsleeptinker.com/2014/0...cle-2013-2014/
    Last edited by DYL; 11-11-2014 at 12:32 PM.

  4. #104
    Join Date
    May 2013
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    1997 328is
    Bled my brakes with a diagnostic laptop running DIS. Accidentally bled it dry, so had to bleed it again. I only tested my pedal briefly, but the pedal is stiff even with the engine on. Maybe 2.5 inches of light resistance travel and then a firm pedal. I'm pretty satisfied with the results for now. Maybe one day I'll put on some stainless lines.

  5. #105
    Join Date
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    M3 Saloon
    Better look into those ss braided lines. They don't have a great track record compared to the oe rubber.
    Last edited by hide1; 12-25-2014 at 12:29 PM.
    If the mind can conceive it, & you believe it, you will achieve it. - Napolean Hill
    -------------------------------------------------------------------------------------------------------------------------------
    1998 Alpine White & 1998 Arctic Silver ///m3/4/5
    JC Intake - ASC Delete - Dinan TB - Flow Matched 21.5# Injectors - JC Tune - SS Euro Reps (modified to retain SAP) - z3m ssk - Eisenmann Race 76mm - Yokohama Advan S2 - Squared LTW's - FK Silverline +X - Rogue FCAB/ RTAB/ RSM/ TM - X-Brace - CDV Delete -Racing Dynamics F&R Strut Braces - NGK BKR6E- German Castrol 0w-40

  6. #106
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    1997 328is
    Go on...
    Last edited by DYL; 12-25-2014 at 06:29 PM. Reason: Message above was edited

  7. #107
    Join Date
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    562/ 949 CA
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    M3 Saloon
    Fresh OE rubber lines can feel just about as good as SS lines w better fitment compared to ageing 15+ year old equipment.

    http://www.bimmerforums.com/forum/sh...than-OEM/page1
    Last edited by hide1; 12-25-2014 at 03:48 PM.
    If the mind can conceive it, & you believe it, you will achieve it. - Napolean Hill
    -------------------------------------------------------------------------------------------------------------------------------
    1998 Alpine White & 1998 Arctic Silver ///m3/4/5
    JC Intake - ASC Delete - Dinan TB - Flow Matched 21.5# Injectors - JC Tune - SS Euro Reps (modified to retain SAP) - z3m ssk - Eisenmann Race 76mm - Yokohama Advan S2 - Squared LTW's - FK Silverline +X - Rogue FCAB/ RTAB/ RSM/ TM - X-Brace - CDV Delete -Racing Dynamics F&R Strut Braces - NGK BKR6E- German Castrol 0w-40

  8. #108
    Join Date
    May 2013
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    SoCal
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    968
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    1997 328is
    Now that i think about it, I'm surprised that so many vendors sell "upgrades" that are perhaps better than aged OEM but the same or worse than fresh OEM. Just meeting demand, I guess...

  9. #109
    Join Date
    Jun 2004
    Location
    NNJ
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    1,994
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    04 330xi, 98 M3/4/5
    Quote Originally Posted by DYL View Post
    Now that i think about it, I'm surprised that so many vendors sell "upgrades" that are perhaps better than aged OEM but the same or worse than fresh OEM. Just meeting demand, I guess...
    Sometimes the products are indeed an improvement... sometimes they arent, and wind up costing you extra in the long run... sometimes they are just plain unsafe. Gotta do as much research as possible.

    Regardless of how well the products perform, I simply refuse to believe that any aftermarket product has more engineering behind it than OEM. Especially the 6th company is on the 9th version of a pick-your-color poly bushing or whatever...

    However, you Really have to try to make your product WORSE that totally clapped out OE stuff!
    [2004 330xi/6] Orient/Natural :: 117-142k :: ZSP :: ZPP :: ZCW
    [1998 M3/4/5] Cosmos/Black :: 113-125k :: TCKline D/A (500/600) :: GC Plates :: RD Sways :: GC Rear Arms :: ZHP Rack :: 3.64 Diffsonline :: PF FCAB :: BW RTAB :: AKG Subframe :: TMS Pulleys :: AA & Borla :: XBrace :: TRM C2s :: BW lines :: DTC60 :: Safety Equipment

    Past:
    [1995 M3] Avus/Dove :: 141-242k :: S52 OBDI :: M50 manifold :: 3.5 HFM :: Turner Chip :: XBrace :: SS Lines :: Turner RTABS :: Vogtland CS :: Bilstein Sport :: Z3 rack
    [1999 M3] Cosmos/Black :: 65-87k :: TCKline S/A (400/500) :: Turner plates :: UUC Front Sway :: PF RTABs :: AA Intake :: Borla :: XBrace :: TRM C2s :: CL RC6E :: Safety Equipment
    [1993 325is] Brilliant/Black :: 135-139k :: Bilstein sports :: Eibach sways and springs :: Dinan camber plates and chip :: Borla :: LSD

    [1983 320i] Safari/Brownish :: 219-242k :: homebrew CAI :: some rust :: multicolor body panels

  10. #110
    Join Date
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    Temecula Ca.
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    99 M Coupe LS Swap
    Quote Originally Posted by NotUrAvgM View Post
    Link to where it says this?
    Sorry, Just noticed your question. From another thread on same subject.
    http://www.bimmerforums.com/forum/at...7&d=1412870908
    Dan "PbFut" Rose

  11. #111
    Join Date
    Jun 2004
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    NNJ
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    04 330xi, 98 M3/4/5
    Quote Originally Posted by PbFut View Post
    Sorry, Just noticed your question. From another thread on same subject.
    http://www.bimmerforums.com/forum/at...7&d=1412870908
    Hmm that's interesting
    [2004 330xi/6] Orient/Natural :: 117-142k :: ZSP :: ZPP :: ZCW
    [1998 M3/4/5] Cosmos/Black :: 113-125k :: TCKline D/A (500/600) :: GC Plates :: RD Sways :: GC Rear Arms :: ZHP Rack :: 3.64 Diffsonline :: PF FCAB :: BW RTAB :: AKG Subframe :: TMS Pulleys :: AA & Borla :: XBrace :: TRM C2s :: BW lines :: DTC60 :: Safety Equipment

    Past:
    [1995 M3] Avus/Dove :: 141-242k :: S52 OBDI :: M50 manifold :: 3.5 HFM :: Turner Chip :: XBrace :: SS Lines :: Turner RTABS :: Vogtland CS :: Bilstein Sport :: Z3 rack
    [1999 M3] Cosmos/Black :: 65-87k :: TCKline S/A (400/500) :: Turner plates :: UUC Front Sway :: PF RTABs :: AA Intake :: Borla :: XBrace :: TRM C2s :: CL RC6E :: Safety Equipment
    [1993 325is] Brilliant/Black :: 135-139k :: Bilstein sports :: Eibach sways and springs :: Dinan camber plates and chip :: Borla :: LSD

    [1983 320i] Safari/Brownish :: 219-242k :: homebrew CAI :: some rust :: multicolor body panels

  12. #112
    Join Date
    Jan 2009
    Location
    Montreal, Quebec, Canada
    Posts
    670
    My Cars
    E46 330 ZHP, E36 328i
    What is DIS ?
    Thanks

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