Vac Brake Bleeder - MityVac

[Wamsutta]

The answer to all this, IMHO, is Speed Bleeders. They replace the factory bleeder fittings. They look like a standard bleeder fitting, but have a spring loaded one-way check valve that will, when the fitting is open, let fluid out, but will not let air in. They also have sealant on the threads to stop air passing the threads. You simply attach a hose with a catch bottle on the end to the fitting, open it and pump the pedal. I do a front and a rear at the same time. Easy, one person job. I have them on all my cars. Flushing the brake fluid every year or so can extend the life of the hydraulic components in your brake system significantly. There are several brands, but here is what I *think* is the original:

http://www.speedbleeder.com/

Happy Motoring!

Those don't work. Why? Because they **** air in past the threads. If there was a way to leave them completely tight when you bleed your brakes, they'd work. But they require you to leave them a little loose and that's when the air gets sucked in.

 

[turner66]

Speedi-Bleed…

pressurized from the master cylinder reservoir via the speedi-bleed reservoir bottle and adapter. no chance of air entering the system unless you completely use all fluid in both reservoirs and don't stop to refill...

Home - Speedi-Bleed

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www.speedibleed.com

 

[bctexas]

Those don't work. Why? Because they **** air in past the threads. If there was a way to leave them completely tight when you bleed your brakes, they'd work. But they require you to leave them a little loose and that's when the air gets sucked in.

With all due respect, my experience with them over many years does not show this. I get perfectly clear fluid with no bubbles from start to finish, as visible in the clear tubing I use. Again, they come with sealant on the threads that prevents the fitting from leaking. If it was able to **** air in, it would also push fluid out past the threads while bleeding, and they do not - they stay perfectly dry.

 

[Stick-man]

I just searched this thread because I used my brothers Mityvac vacuum bleeder yesterday and immediately ordered one.

I found the answer to the problems discussed here, and it's pretty easy. I hope I can explain it so everyone can understand.

First, I didn't have time to use the auto filler so I had my son watching and filling the master as needed.

I too noticed the great amount of air bubbles in the line while vacuuming each caliper. I knew it was creating more vacuum than the bleeder screw could provide fluid. So after bleeding it for a minute or so, I had the hose in a loop above the bleeder screw, and I backed off on the vacuum to where I was getting no extra bubbles, but the fluid was still flowing. Once I seen the fluid d
flowing, but no more bubbles, I knew it was bled. The pedal was rock hard. You just have to reduce the amount of vacuum so that it is removing fluid but not enough to **** air from around the bleeder screw.

The reason I even tried the vac for the first time was that I am old school and did the pedal pump, hold, down, method that I had used since I can remember. But I couldn't get solid fluid, always a lot of air. I still don't know why, but again, I ordered my own Mityvac last night and I think it works fantastic.