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Technical Flushing Brake Fluid - One Man Job

Discussion in 'The Hokey Ass Message Board' started by MUNCIE, Apr 2, 2025 at 4:20 PM.

  1. MUNCIE
    Joined: Jan 24, 2006
    Posts: 2,388

    MUNCIE
    Member
    from Houston

    Well the subject has been covered before but I was wondering what anyone uses when doing this by yourself. In the past I would always have my son or a friend come over and pump the brakes while I cracked each wheel cylinder nipple open. Let it drain out and then close.
    I would go around to all four as many times as needed, repeating the same steps and then adding fluid to the master cylinder. Once the brake fluid would come out clear. I would repeat the process until the pedal was firm again and call it a day. Is there a easier way to do this with a tool or vacuum pump?
    I have never owned any type of pump but I imagine if I bought one and used it I could probably clean all the lines out from one nipple and then fill and bleed the system. Is this correct?
    Thanks in advance,
    Mark
     
  2. Petejoe
    Joined: Nov 27, 2002
    Posts: 12,479

    Petejoe
    Member
    from Zoar, Ohio

    I’ve welded a quick release fitting for my compressor on an extra brake master cylinder cap.
    Set the pressure for 2 lbs and used that to push the fluid through my system.
    Low pressure prevents blown seals.
     
  3. AVater
    Joined: Dec 9, 2008
    Posts: 3,325

    AVater
    ALLIANCE MEMBER
    1. Connecticut HAMB'ers

    I was able to buy a small garden sprayer missing a nozzle for cheap. Attached a female quick connect air compressor fitting to the sprayer hose and the opposite type filling to an old master cylinder cap. Add fluid to the sprayer and pump it a bit. Then do as Petejoe noted. Works great and I don’t worry about running the master cylinder dry.
     
  4. tubman
    Joined: May 16, 2007
    Posts: 7,711

    tubman
    ALLIANCE MEMBER

    "Speed-Bleeders" have always worked well for me.

    Check 'em out.
     
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  5. I bought one of these years ago when they were $65 and love it. Have done multiple one man flush/bleed jobs over the years. upload_2025-4-2_19-54-18.png
     
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  6. 57Fury440
    Joined: Nov 2, 2020
    Posts: 397

    57Fury440
    Member

    I've always had a friend help by pushing the pedal while I work the bleeder screws. Every spring when I take the 57 out, I always use on old turkey baster to empty the master cylinder and then refill with new brake fluid. It seems to help, as the fluid is always clean, even when I flush it.
     
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  7. FrozenMerc
    Joined: Sep 4, 2009
    Posts: 3,252

    FrozenMerc
    Member

    If your car has a firewall mount master cylinder, and it is the high point in the system. Put the car up on jack stands and open the bleeds with a pan underneath each corner. Let gravity do the work while you enjoy an ice cold barley pop.
     
  8. Some clean brake fluid in a bottle with a long hose submerged in the clean fluid on one end, with the other end on the bleeder. Place the bottle higher up than the bleeder and start pumping until the air stops and the fluid is clean entering the bottle. Less than 20 minutes and you're done with minimal mess. The fancy tools work sometimes, but this method has never failed.
     
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  9. MUNCIE
    Joined: Jan 24, 2006
    Posts: 2,388

    MUNCIE
    Member
    from Houston

    I did that this past weekend because I noticed that the one of the bowls had fluid that looked a litttle milky and the other one was dirty. Last flushed the lines a couple of years ago. I added some more but wil flush everything out soon.
    Thanks
     
  10. MUNCIE
    Joined: Jan 24, 2006
    Posts: 2,388

    MUNCIE
    Member
    from Houston

    Not a bad idea. :D I might just do that on a Saturday.
     
  11. MUNCIE
    Joined: Jan 24, 2006
    Posts: 2,388

    MUNCIE
    Member
    from Houston

    Thanks everyone for the suggestions. I will definitely keep all of these in mind. Will be doing it on my daily. The M/C is firewall mounted.
    upload_2025-4-3_8-53-10.png
     
  12. TexasHardcore
    Joined: May 30, 2003
    Posts: 5,448

    TexasHardcore
    Member
    from Austin-ish

    Same for me. I also have a Mighty Vac bleeder kit, but seem to use it more for fluid extraction rather than brake bleeding.
     
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  13. RodStRace
    Joined: Dec 7, 2007
    Posts: 6,720

    RodStRace
    Member

    I've found that when doing this alone, you can't rush it.
    Also, lightly tapping the wheel cylinders before cracking the bleeders can get all the air bubbles to stop sticking to the sides and merge at the top.
    Doing the process, then another round the next day can sometimes get just a bit more air out, or at least confirm it's all good.
     
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