In Memory of Member 1338
In Memory of Member 1338
Results 1 to 15 of 15

Thread: Soft brakes after brake pads replacement

  1. #1
    Woohoo! clicknext's Avatar

    2006 Tungsten Grey Mazda6 GT I4

    Join Date
    Jun 2005
    Location
    Canadia
    Posts
    1,337

    Soft brakes after brake pads replacement

    I just replaced my front brake pads. The procedure was to simply open the caliper without taking it off, take the old pads off, and put the new ones on, and put a layer of grease on the back of both pads, and reinstall everything in reverse order.

    Now when I brake, the pedal is really soft and I have to go down pretty far to get decent braking power. However, if I let go and step on the pedal a second time, it feels firm and just fine. But then when I drive a little distance, it goes back to being soft on the first touch.

    Does anyone know what's going on?

    By the way, the brake fluid reservoir is now a lot more full than it was before installing the new pads. Even after pressing down hard on the brake, the fluid level doesn't go down. Not sure if this is normal or not.

    Thanks, guys

  2. #2
    Rollin' on stock wheels. Tasty's Avatar

    2003 Protege5

    Join Date
    Nov 2005
    Location
    Houston, TX
    Posts
    670
    ABS or not? I think I'll have to do pads before too long, and I'll definitely be bleeding the system and getting fresh fluid in there. Sounds like maybe you should too...
    2003 Laser Blue Mica Protege5
    - Eibach Pro Kit Springs - Kartboy Short Shifter - Kartboy Shifter Bushings - Mazda6 Wagon Rear Wiper - CX-7 Antenna - Racing Beat Catback Exhaust - Kartboy Exhaust Hangers - XM Radio - DaveB Rings -

  3. #3
    Woohoo! clicknext's Avatar

    2006 Tungsten Grey Mazda6 GT I4

    Join Date
    Jun 2005
    Location
    Canadia
    Posts
    1,337
    ABS. Yeah, I'm guessing I have to do a bleed. It's so hard to find a time when I'm not working and a garage near me is open, though.

  4. #4
    Hoping for 7 psi!! AEMMAZDA5's Avatar

    2002 Mazda Protege 5

    Join Date
    Sep 2007
    Location
    Salt Lake City
    Posts
    31
    Quote Originally Posted by clicknext View Post
    I just replaced my front brake pads. The procedure was to simply open the caliper without taking it off, take the old pads off, and put the new ones on, and put a layer of grease on the back of both pads, and reinstall everything in reverse order.

    Now when I brake, the pedal is really soft and I have to go down pretty far to get decent braking power. However, if I let go and step on the pedal a second time, it feels firm and just fine. But then when I drive a little distance, it goes back to being soft on the first touch.

    Does anyone know what's going on?

    By the way, the brake fluid reservoir is now a lot more full than it was before installing the new pads. Even after pressing down hard on the brake, the fluid level doesn't go down. Not sure if this is normal or not.

    Thanks, guys
    It definitely sounds like you've got some air bubbles that got into your system somehow. The same thing happened to me when I took the calipers off to paint them. You just need to bleed your whole system and run some fresh fluid through there.

  5. #5
    Registered Member NVP5White's Avatar

    2003 Mazda Protege5 - Pure White

    Join Date
    Apr 2005
    Location
    Bethesda, MD
    Posts
    839
    Quote Originally Posted by clicknext View Post
    I just replaced my front brake pads. The procedure was to simply open the caliper without taking it off, take the old pads off, and put the new ones on, and put a layer of grease on the back of both pads, and reinstall everything in reverse order.

    Now when I brake, the pedal is really soft and I have to go down pretty far to get decent braking power. However, if I let go and step on the pedal a second time, it feels firm and just fine. But then when I drive a little distance, it goes back to being soft on the first touch.

    Does anyone know what's going on?

    By the way, the brake fluid reservoir is now a lot more full than it was before installing the new pads. Even after pressing down hard on the brake, the fluid level doesn't go down. Not sure if this is normal or not.

    Thanks, guys
    I'm pretty sure everything you describe is normal. If you didn't open the system there should be no reason to have air in the system after a pad replacement. I believe I had a softer feeling pedal after replacing my pads. I'm not so sure it was a soft pad as much as my getting used to a different coefficient of friction, and or my pads properly bedding into the rotor.


  6. #6
    Registered Member FSCatalyst's Avatar

    Black Protege ES 2.0L

    Join Date
    Mar 2006
    Location
    Edmonton, Alberta
    Posts
    218
    When you are at a stop while having the brake pressed firmly, does it slowly go down? Your problem sounds awefully like pedal fade. Maybe you haven't noticed it before until you placed the new pads beause you were expecting some improvement in braking, so you wouldn't notice it until you were looking for it. That happens sometimes....

  7. #7
    Woohoo! clicknext's Avatar

    2006 Tungsten Grey Mazda6 GT I4

    Join Date
    Jun 2005
    Location
    Canadia
    Posts
    1,337
    Quote Originally Posted by FSCatalyst View Post
    When you are at a stop while having the brake pressed firmly, does it slowly go down? Your problem sounds awefully like pedal fade. Maybe you haven't noticed it before until you placed the new pads beause you were expecting some improvement in braking, so you wouldn't notice it until you were looking for it. That happens sometimes....
    No, it doesn't slowly go down. It was a weird feeling when I put the new pads in because my pedal used to be firm and extremely responsive, but the first time I stepped on it, it felt like there was nothing there.

  8. #8
    zoom zoom, eh? ChopstickHero's Avatar
    Donated: $10

    2003 Subaru WRX Wagon, 2000 Miata

    Join Date
    Apr 2002
    Location
    Toronto, Canada
    Posts
    4,340
    well, new pads have to settle a little. the first few times braking, i pressed the brake pedal to the floor and it slowed down very little. try driving for a few days to see if it firms up. if not, i would suggest bleeding your brakes and adding new brake fluid (only takes like 15 mins if you do it fast).

  9. #9
    Registered Member 02Protege'5's Avatar

    '02 P5

    Join Date
    Apr 2005
    Location
    B.F.E., PA
    Posts
    172
    BLEED! I guarantee thats the problem.

    you dont need a garage to bleed your breaks, just a friend and 45 min tops.
    Pioneer Super Tuner mp3/wmp,
    side moldings delete
    Added a carseat and stroller

  10. #10
    Registered Member P-Funk!'s Avatar

    Lancer Ralliart Sportback

    Join Date
    Jul 2002
    Location
    Chesapeake Beach, MD
    Posts
    3,291
    If ti doesn't firm up after a good bleed - i would suspect the master cylinder.

    'Sometimes' forcing the fluid back in can blow a seal.
    I used to have a
    Black Mica Protege5
    Mods:
    MP3 ECU
    Hawk Pads
    OBX Header
    AWR Mounts
    Tokico Blues
    Eibach Pro Kit
    Underdrive Pulley
    Kartboy Bushings
    ThermoBlok Spacers
    Kumho ECSTA AST tires
    Fabricated Ground Wire Kit
    VTCS-Less Intake (Ported)
    Fabricated SRI w/ K&N Filter
    Fog lights on with parking lights


    Audio:
    Kenwood Head Unit
    Kenwood Mono Amp
    Custom 10" Enclosures
    Boston Accoustic 1" Tweets
    Rockford/Fosgate Punch 50

  11. #11
    Woohoo! clicknext's Avatar

    2006 Tungsten Grey Mazda6 GT I4

    Join Date
    Jun 2005
    Location
    Canadia
    Posts
    1,337
    Quote Originally Posted by P-Funk! View Post
    If ti doesn't firm up after a good bleed - i would suspect the master cylinder.

    'Sometimes' forcing the fluid back in can blow a seal.
    Blowing a seal would surely result in a leak, right?

  12. #12
    Registered Member FSCatalyst's Avatar

    Black Protege ES 2.0L

    Join Date
    Mar 2006
    Location
    Edmonton, Alberta
    Posts
    218
    i've personally never seen a seal get damaged by forcing the fluid back up. you'd think that when you push on the pedal thus forcing what tons of force would do the trick.

    but if there is a seal damaged depending on where it is, could be an internal leak (no visible sign of leakage) or external. by the desription of your problem it doesnt seem to be the ring seals because if it was then you would have a problem like i described a couple posts up.

  13. #13
    Registered Member P-Funk!'s Avatar

    Lancer Ralliart Sportback

    Join Date
    Jul 2002
    Location
    Chesapeake Beach, MD
    Posts
    3,291
    ^I agree - it is rare BUT if the seals were old/worn... it is way more volume flowing in the reverse direction than driving/braking.
    Sigs are visible only in your first post on a page. To change your thread display preferences, click here and enable 'Always Show Signature'.

  14. #14
    Woohoo! clicknext's Avatar

    2006 Tungsten Grey Mazda6 GT I4

    Join Date
    Jun 2005
    Location
    Canadia
    Posts
    1,337
    I got my fluid flushed, drove around a little, and now it's all good! Wow, I didn't know brake fluid came yellow. I guess it's probably not a good thing that the old stuff had turned more of a black/red.

  15. #15
    Registered Member

    2004 Mazda3 S Manual

    Join Date
    Jul 2019
    Posts
    1

    flushing fluid worked, but my observation and theory...

    I know this is an old thread, but perhaps my experience will reduce someone's confusion/stress/anxiety.

    2004 Mazda3 S Manual transmission, but I had same symptom after replacing rear pads and pin sleeves.
    Flushing brake fluid did the trick.
    My best guess is that in the horrible process of trying to twist and compress the piston, (where it didn't seem to be working right and I smacked it, tried to compress with a c-clamp slightly, and backed it out by turning counterclockwise) some air got into the system. Just insanity.

    FYI, there is another thread on another forum where the same symptom happened after changing pads or after hitting brakes hard and activating the ABS, and the resolution that worked for several people was slamming on brakes 4 to 8 times to activate the ABS.... That did not work for me, but I tried it first anyway because I couldn't conceive that changing pads would effect the fluid!

Similar Threads

  1. Will focus brake pads fit my 3?
    By mazda3zoom in forum Mazda3 General
    Replies: 9
    Last Post: 01-20-2005, 03:32 PM
  2. brake pads and where to get service
    By trinity in forum Protege5
    Replies: 10
    Last Post: 12-06-2004, 02:01 PM
  3. Rear brake pads first ?
    By GhostLinker in forum Protege5
    Replies: 5
    Last Post: 06-06-2003, 02:28 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •