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Making a brake pressure bleeder?
#1305422 Sun Mar 31 2019 02:21 PM
Joined: Nov 2011
Posts: 2,577
Shop Shark
Hey all,

After reading many folks comments about the evils of bleeding brakes with the old-fashioned two person depressing the brake pedal method, I have decided to change my bad ways. In the process of sourcing materials and hope that you all can help. As typical in this consumer age, there seems to be almost too many options making it difficult to separate the wheat from the chaff.

Below are some thoughts and questions that I hope someone can help me determine the best system at an economy target:
1) Is a one gallon sprayer the right size?
2) There are general sprayers, bleach sprayers, and deck stain sprayers; which ones have seals that are most compatible with brake fluid?
3) Since brake fluid is in the spray tank, are there some plastics in the pump and tank that are not compatible with brake fluid?
4) Is a pressure gauge really necessary?
5) Pressure relief valve systems seem to be a good idea for depressurizing, is it really necessary?
6) Where did you source good non-leaking quick connect fittings?



Re: Making a brake pressure bleeder?
Paul_WNC #1305449 Sun Mar 31 2019 05:38 PM
Joined: Feb 2004
Posts: 20,842
Search "Pressure brake bleeder" on Ebay. The first one on the list is $99.94 with free shipping, and it comes with an entire case filled with different adapters, a working quick-connect, a pressure gauge, and a bleeder that works without a lot of monkey motion and trial and error. Some things just aren't worth the hassle of trying to Rube Goldberg something together out of bits and pieces.

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Re: Making a brake pressure bleeder?
Paul_WNC #1305532 Mon Apr 01 2019 11:36 AM
Joined: Jul 2008
Posts: 354
Shop Shark

Many years ago I followed HRL's advice and bought a manufactured brake bleeder. I recently needed to pump some gear oil and searched for a DIY solution. Here is pretty good documentation of a DIY build. DIY $20 Brake Bleeder


Re: Making a brake pressure bleeder?
Paul_WNC #1305535 Mon Apr 01 2019 11:57 AM
Joined: Nov 1995
Posts: 4,612
Unrepentant VW Lover
Another vote for Jerry's advice. I used one recently and it made the job super easy to do alone. Well worth the money to just buy one.


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When tomorrow comes..."

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Re: Making a brake pressure bleeder?
Paul_WNC #1305685 Tue Apr 02 2019 12:15 PM
Joined: Jul 2018
Posts: 81
Shop Shark
A bit off topic but I was using a vacuum bleeder tool. It’s a nice tool good for checking vacuum advance. But I found when trying to bleed brakes that it drew air in from around the bleed nipple rather the sucking air out the line.

Re: Making a brake pressure bleeder?
Paul_WNC #1305722 Tue Apr 02 2019 06:10 PM
Joined: Oct 2005
Posts: 2,970
"Hey! I sound like Darth Vader!!
Yup. They'll work, but you have to watch for that.

Re: Making a brake pressure bleeder?
Paul_WNC #1305756 Wed Apr 03 2019 12:03 AM
Joined: Jan 2018
Posts: 187
Shop Shark
For a vacuum bleeder, I've found out it can help with a little sealer, or tape on the bleeder threads. It just needs to be able to draw a good flow of fluid through the system.

Last edited by 4100 Fire Truck; Wed Apr 03 2019 12:04 AM.
Re: Making a brake pressure bleeder?
4100 Fire Truck #1305838 Wed Apr 03 2019 08:59 PM
Joined: Nov 2010
Posts: 119
Shop Shark
I bleed mine into another container with brake fluid. But same issues with air coming in through the nipple, I've coated grease around the bleeder and hadn't had any more air creeping in

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Re: Making a brake pressure bleeder?
Paul_WNC #1305856 Wed Apr 03 2019 11:05 PM
Joined: Feb 2001
Posts: 1,125
Shop Shark
Paul , I'm cheap , so I just put an air line fitting into a spare cap , do one wheel at a time , check level as I go .

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Re: Making a brake pressure bleeder?
Paul_WNC #1305965 Thu Apr 04 2019 06:03 PM
Joined: Dec 2015
Posts: 2,095
Big Bolt Forum Moderator
I made one using a 16$ garden sprayer from Lowes. Works great, my dad borrowed it to do his 40 Chevy sedan also.


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