Using a Motive Brake Bleeder
Melting Slicks
Joined: Jun 2011
Posts: 3,116
Likes: 598
I connect to the caliper bleeder ~ 6 feet of clear plastic tube. One end into a bucket to collect fluid.
Start the bleed until all the air is pushed out of the tube into the bucket. Then close the bleeder and remove the line from the bleeder to introduce a air bubble in the clear tubing, then reconnect to the bleeder and bleed again
until the air is pushed into the bucket.
After 3 complete bleeds the rear MC bowl is almost empty and 4 complete bleeds the front bowl is almost empty.
Or you can calculate the bowl capacity and determine the total amount of fluid (volume) of the plastic tubing for 6 ft and determine how many time you can bleed before you empty the bowl.
But with trial and error you will start to learn when to stop. If you only use a short plastic tube connected to the caliper it will take a long time. The longer you make the tubing the less times you need to close the bleeder and add air to the line and start again.
I don't use a motive bleeder, but its the same ideal. Here is what I use and connect to my air compressor.
Last edited by cagotzmann; Oct 11, 2019 at 06:22 PM.
Thread Starter
Le Mans Master
Joined: Sep 2002
Posts: 5,236
Likes: 898
From: Myrtle Beach SC
One word of advice with the Motive bleeder. Add air hose quick connect 1/4" fittings to the hoses. I never add fluid to my motive bleeder and just use it as a pressure device. The quick connects make it real easy to keep pressure in the Motive, but remove the master cylinder adapter to add fluid.
Last edited by hunt4cleanair; Oct 13, 2019 at 01:53 PM.
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
Got my Motive bleeder and like the idea of quick connect. I'm assuming the male attaches to the M/C cover plate, thus keeping the tank under pressure. But then, once the unit is "disconnected" and pressure escapes from the M/C cover, what does it do to the fluid? Is it not sucked up with the vacuum as the air depressurizes?
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
use a different system either pump the pedal or use a pressure bleeder
Last edited by bobs77vet; Oct 15, 2019 at 12:37 PM.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Got my Motive bleeder and like the idea of quick connect. I'm assuming the male attaches to the M/C cover plate, thus keeping the tank under pressure. But then, once the unit is "disconnected" and pressure escapes from the M/C cover, what does it do to the fluid? Is it not sucked up with the vacuum as the air depressurizes?
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
The 1/2" Lexan lid handles the big "C" clamp I apply w/o cracking. I put quite a bit of clamping force on it so the gasket doesn't leak.
And I can see inside the MC while bleeding.
And I can see inside the MC while bleeding.
Last edited by HeadsU.P.; Oct 15, 2019 at 12:50 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Le Mans Master
Joined: Sep 2002
Posts: 5,236
Likes: 898
From: Myrtle Beach SC
The mail fitting on the adapter just lets the air out. There is nothing down in the fluid of the master, so when disconnected it just releases the pressure. My goal was to keep the motive under pressure so I did not have to keep pumping it up when I added fluid to the master. It is also nicer to have a clean motive instead of one full of fluid.
But what about that rear flare nut and line that won't seat with the m/c? What to do without replacing the line?
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
This is strange but it built some nice pressure but only the left rear outboard bleeder bled and not well. The right side...no response! When I went to repressurize the Motive (refresh fluid), it would not pressurize. Fluid weeps from the rear glare nut, (not leaks) even after several attempts to loosen and get the line flare to seat with the m/c. I've also concluded that I must have tripped the valve in the proportional valve. I plan to remove it, clean it, etc.
But what about that rear flare nut and line that won't seat with the m/c? What to do without replacing the line?
But what about that rear flare nut and line that won't seat with the m/c? What to do without replacing the line?
Thread Starter
Le Mans Master
Joined: Sep 2002
Posts: 5,236
Likes: 898
From: Myrtle Beach SC
Found a "nick" on the M/C flair of the brake line...I mean a nick! Removed to confirm, at first I could feel it so removed it. Replacement ordered.