Soft, Squishy Brakes? Hard to Stop? How to Diagnose Brake Master Cylinder Leak!

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  • Опубліковано 18 сер 2021
  • For More Info visit us at: 1aau.to/h/cFk/
    Are your brakes going soft? Does the brake pedal feel squishy or spongy? In this video, Len breaks down the master cylinder, giving you an insider look at the components, and where leaks may develop, so that you can diagnose your own brake master cylinder and replace it if necessary!
    Check out this playlist for more diagnostics you can do yourself at home!
    • Driveway Diagnostics!
    For More Info visit us at 1aau.to/h/cFk/
    ⚠ DISCLAIMER:
    While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.
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КОМЕНТАРІ • 69

  • @1AAuto
    @1AAuto  2 роки тому +6

    √ *Watch the Video*
    √ *Buy The Part at 1A Auto* 1aau.to/m/Visit-1AAuto
    √ *Do it Yourself*
    √ *Save Money*

    • @am.ahmedd
      @am.ahmedd 2 роки тому +1

      Save us, good people my husband and I have three children orphans needed to help him
      To continue and the number is present in the personal image of the UA-cam channel

  • @mr.selfdestruct1677
    @mr.selfdestruct1677 2 роки тому +17

    The quality of the videos are getting better and better, I love the breakdowns how a part works and the camera angles great work.

  • @brianschrier6193
    @brianschrier6193 Рік тому +4

    Enough with the cutaways and more with the info. Thanks for being thorough & talking fast. Good job.

  • @InfamousDogPound
    @InfamousDogPound 2 роки тому +7

    Another great video buddy. Why you dont have MILLIONS and Millions of views on this I have no clue. Keep up the great work. Thanks for your help.

  • @Dhi-fe5eu
    @Dhi-fe5eu 2 роки тому +3

    Great video. I love watching and learning from 1A auto. Keep up the great work.

  • @deespasojevic3013
    @deespasojevic3013 2 роки тому +3

    Oh yea my man Len is back at it again! Nice work bruddah

  • @dpaulak
    @dpaulak 2 роки тому +4

    There is a Primary Piston and Secondary Piston in that master, if that master is leaking in booster the fluid is going to be suck in the engine via the booster hose..check inside of booster hose.

  • @onyxtraveler
    @onyxtraveler 2 роки тому +7

    I’m having the Same issue but can’t find a fluid leak anywhere :/

  • @garyrohlman6013
    @garyrohlman6013 2 роки тому +3

    THIS GUY IS ENTERTAINING. VERY GOOD TECH. GREAT TEACHER

  • @floridamanfishing1390
    @floridamanfishing1390 2 роки тому +5

    Great video sir The breakdown definitely gonna help me out with my vehicle I am having the same issue as you were also i have a question for u you did not show bench bleeding the brake master cylinder did u need to do that or was it not needed ?

  • @johnjkizer6399
    @johnjkizer6399 Рік тому

    Great video, thanks
    My question is when flushing the brake fluid from my friends car I cannot get fluid to come out of any of the 4 wheels, if it was only one wheel that wasn’t bleeding I know that it would be likely a bad caliper but on all four wheels, could it be the abs unit that giving problems or master brake cyclinder. Thanks

  • @crazychivez
    @crazychivez 2 роки тому +5

    Super informative! Thank you guys for this video

    • @1AAuto
      @1AAuto  2 роки тому +1

      +Luxor Slopski Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

  • @dashkamcarma1221
    @dashkamcarma1221 Рік тому +1

    Gotta love Len.

  • @mx2048
    @mx2048 2 роки тому +5

    Scotty, Chris, and others recommend using flare wrenches to unscrew the nuts from brake cylinders. Flare wrenches hold 5 sides of a nut, whereas regular wrenches hold 2 sides only. You did use flare wrenches too. Just noticed.

  • @johngreek5788
    @johngreek5788 2 роки тому +6

    It would have been nice if you would have talked about bench bleeding it. Good video. Thanks

    • @GMoney-B
      @GMoney-B Рік тому

      I am no expert so take this with a phat grain of salt, but I would think with a pressure bleeder that you might not need to bench bleed since it forces all the air through. Tthat is what it does with regular bleeding of the system but I don't know for sure though.

    • @getminesallday24
      @getminesallday24 Рік тому +1

      You can bleed it on the car just loosen lines up and push brake till no air comes out attach lines back uo bleed all 4 calipers

  • @karlie-raezirk370
    @karlie-raezirk370 5 місяців тому

    Only been dealing with this for 2 years. Neat

  • @SamVieiraGuitar
    @SamVieiraGuitar 2 роки тому

    Hey guys, it would mean a lot if you could help me with a question. So I have a soft pedal and one of two things, master c. or air in the system. My car has hill assist and when the brakes lock up it is the abs doing the job right? In that moment if my master cylinder had an internal leakage my pedal would still be soft because its the same as blocking the master c. outputs right? BUT, when hill assist is activated my brake pedal is rock solid meaning my master C. has no internal leakage and the problem could potentially be air in the system am I thinking right? Another thing, I bleed all 4 wheels but the pedal is still soft, could the abs module itself need bleeding? I see on youtube people bleeding the abs module for that reason. Please tell me if im thinking right. Thank you

  • @bigwon4056
    @bigwon4056 Рік тому

    I’m having the same problem but I haven’t got a leak and have bleed the brakes,iv tested the servo and it good, so now I’m thinking it’s the master cylinder.? My brake pedal sinks to the floor when engine it on, and it’s like you have to pump the brakes to get a hard brake.? Any information would be great

  • @kshipon1798
    @kshipon1798 Рік тому +1

    My 07 Lexus RX 350 break padel sink, (not all the time and not everyday) master cylinder has been charged twice problem still exists, has been bleeded couple of time, everything else is good, no leak anywhere why do you think it’s happening?
    Thanks

  • @kanevivalakane3699
    @kanevivalakane3699 8 місяців тому

    Hi.
    I am sensing some issues with my brake pedal. Let's say I am driving on highway and not using brake pedal for 15 mins. I have noticed that to apply brakes, it needs a little hard foot. It becomes scary at times.
    However in city driving like stop n go driving the brake pedal works very good. What could be the issue?

  • @jstncheney
    @jstncheney 11 місяців тому

    That thumbnail image is priceless.

  • @richk320
    @richk320 2 роки тому

    Great video!

  • @TMM6900
    @TMM6900 2 роки тому +1

    Seal failed due to contamination? Oil or old brake fluid?

  • @killdano
    @killdano Рік тому

    Wow you're a rly good actor

  • @miguelgomez893
    @miguelgomez893 2 роки тому +2

    Great video 💪🏻🔥

    • @1AAuto
      @1AAuto  2 роки тому

      +Miguel Gomez Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

  • @jayflow23
    @jayflow23 2 роки тому +3

    You are the man brother.

    • @1AAuto
      @1AAuto  2 роки тому +1

      +Jayflow23 Entertainment Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

    • @jayflow23
      @jayflow23 2 роки тому +1

      I always do .💪🏾💪🏾💪🏾💪🏾💪🏾

  • @juanulloa5338
    @juanulloa5338 Рік тому

    How are you i need to know How do you remove Wire connector from the Master brake Booster pls

  • @edwardacosta4429
    @edwardacosta4429 11 місяців тому

    This is going to help so much bro hy

  • @samueladjavon4825
    @samueladjavon4825 2 роки тому

    nice job, you really know what you are doing

  • @lockhamj
    @lockhamj 4 місяці тому

    Great vid,

  • @bgizzle7545
    @bgizzle7545 Рік тому

    My master cylinder is about 3 months old. I went to leave work a few days ago and when I pushed the brakes the pedal went to the floor and stayed. I can't figure out what it could be. I can't find any leaks anywhere

  • @fito6950
    @fito6950 2 роки тому +4

    veey underrared channel, Keep it up ! :)

    • @1AAuto
      @1AAuto  2 роки тому +2

      +iGambled Thanks for the kind words!

  • @johnnybonifacia9177
    @johnnybonifacia9177 2 роки тому

    What about the fuel that leak in to the booster....you have to remove it and how.......what happens if the engine suck the fuel in the intake valve

  • @Nickthecarguy
    @Nickthecarguy 2 роки тому

    Where can I get the kit to bleed the master cylinder

    • @kevinmanning4880
      @kevinmanning4880 2 роки тому

      Find another master cylinder on a vehicle at the auto Wreckers. Remove the fittings , cut the lines, long enough to bend the lines to sit in the reservoir to submerge under the fluid level to bleed the master cylinder. If buying over the counter, it should come with bleeder kit.

  • @marcrobert7690
    @marcrobert7690 2 роки тому +1

    The best brakes I know of are the titanium calipers on the Bugatti Chiron Super Sport.

  • @marcsongaudin8429
    @marcsongaudin8429 2 роки тому +2

    Great people 1aauto guys

  • @danielsegovia811
    @danielsegovia811 2 роки тому

    Very helpful video! I'm gathering information on how to replace master cylinder!

  • @louvendran7273
    @louvendran7273 2 роки тому +2

    The rust! It's crazy to live in the rust belt.

  • @ChiraqVet
    @ChiraqVet Рік тому

    I just replaced the passenger side entire hub assembly, caliper, rotor, break line, when that obviously wasn't the problem. My passenger side break froze to the rotor causing a fire. 2009 Silverado. Yup i need a master cylinder

  • @HomeMadeBoards
    @HomeMadeBoards 2 роки тому +2

    Can't tell if you cause my issues or know them personally. The exact video I need the day my issue arises! 🤣

    • @1AAuto
      @1AAuto  2 роки тому

      +Jesse Turner Thanks for checking us out. Shop for high quality auto parts on 1AAuto.com:
      1aau.to/m/Shop-1AAuto-c

  • @janielramirez9181
    @janielramirez9181 2 роки тому +1

    U can replace the seals nt the master cylinder

  • @teddylundgren3984
    @teddylundgren3984 Рік тому

    I'm 99% sure you only pulled out half of the stuff in the mc as in only the primary circuit piston and spring, I'm pretty sure there should have been another thing and another spring

  • @musclekingmedia
    @musclekingmedia Місяць тому

    8:00 not true. If you loose brake fluid in one side of reservoir, the pedal will still sink. The air from one side will get into the other.. air can get past the MC piston seal. A true safety measure is dual master cyl. The only way to keep both separated.

  • @marqueswilsonn
    @marqueswilsonn 7 місяців тому

    What if there’s a stream of fluid squirting straight upon the reservoir

    • @1AAuto
      @1AAuto  7 місяців тому

      +Marques Wilson We wouldn't be able to diagnose an issue like that here, you may want to have a local mechanic take a look at it. Thanks for checking us out! 1aau.to/m/Shop-1AAuto-c

  • @joebagofdoe4762
    @joebagofdoe4762 10 місяців тому

    He should start his own show for himself He could be another Scotty Kilmer!!!

  • @woodandtable
    @woodandtable 2 роки тому +1

    You skipped bench priming the new MC.

  • @geniuscommentalert9376
    @geniuscommentalert9376 2 роки тому

    1

  • @panayiotiskrokodeilos5935
    @panayiotiskrokodeilos5935 2 роки тому

    In this video he sounds like Chris fix doesn't he?

  • @billbixby7877
    @billbixby7877 5 місяців тому

    My brake lines have a leak and I am still driving it.

  • @user-te9nf8mm7t
    @user-te9nf8mm7t Рік тому

    oh no!!!!

  • @sanfordader
    @sanfordader Рік тому

    Why didn't you show, or at least mention that you bench bled the master cylinder? Trying to bleed a system with an empty master cylinder is infuriating

  • @romancastro3253
    @romancastro3253 2 роки тому +2

    Replace Master Cylinder and Booster. Attempt to fix this rusty crap will come back to haunt you later just when you need them the most. Go new on the Master Cylinder, do not trust remanufactured parts.

  • @vontrap6942
    @vontrap6942 Рік тому +1

    You need to 1. Stop doing acting scenarios you can't act. 2. Just do the install, we don't need a scenario and a story behind it.

  • @rebeccagray986
    @rebeccagray986 2 роки тому +1

    PLEASE - SLOW DOWN!!
    I'm an old lady that needs time to process what you are trying to say.

  • @spinnetti
    @spinnetti 11 днів тому

    I've seen 80 year old cars in better shape. gross!

  • @am.ahmedd
    @am.ahmedd 2 роки тому

    Save us, good people my husband and I have three children orphans needed to help him
    To continue and the number is present in the personal image of the UA-cam channel

  • @sifusays9242
    @sifusays9242 2 роки тому +6

    What I get from this Video is the company you work for doesn't pay you enough money to buy a better truck .U have communication skills get paid for it .

  • @gatekeeper65
    @gatekeeper65 Рік тому

    Quit yelling. Good video otherwise.