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#787908 - 12/14/06 03:33 AM Brake bleeding: pressure or vacuum?
par Offline


Registered: 12/05/02
Posts: 157
Loc: usa
Let's keep this strictly to brake bleeding.

If you were to buy one device to help bleed brakes, then would it be a pressure unit such as the Motiv, or a vacuum unit like the Mity-vac? Let's also assume cost is not an issue and base our decision on the merits of each method.

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#787909 - 12/14/06 04:46 AM Re: Brake bleeding: pressure or vacuum? [Re: par]
Idrinkmotoroil Offline


Registered: 08/04/02
Posts: 922
Loc: Ontario , Canada
for a one person bleeding system I've always liked vacuum methods, they work prety well. I don't know much about the Motiv setup to be honest with you but any vacuum setups I've used are real simple and effective.

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#787910 - 12/14/06 06:04 AM Re: Brake bleeding: pressure or vacuum? [Re: Idrinkmotoroil]
unDummy Offline


Registered: 02/01/03
Posts: 8756
Loc: RI
I'd use and recommend any pressure bleeder 1st over a vacuum bleeder.
I'm also a speedbleeder junkie.

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#787911 - 12/14/06 06:37 AM Re: Brake bleeding: pressure or vacuum? [Re: unDummy]
HTSS_TR Offline


Registered: 04/17/06
Posts: 19528
Loc: Lake Forest, CA
I used Motive Bleeder on several cars, it is the easiest hand tool to bleed the brake, specially for Euro cars such as MB or BMW, no chance for air to get in the brake lines. I have Mityvac 7201 to change oil, transmission fluid; changing oil for newer MB is super easy with Mityvac.
_________________________
'00 MB E430
'04 Honda S2000
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'14 Honda Accord LX
"Throwing food away is like stealing it from the poor and hungry" Pope Francis

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#787912 - 12/14/06 06:41 AM Re: Brake bleeding: pressure or vacuum? [Re: HTSS_TR]
KBFXDLI Offline


Registered: 01/30/06
Posts: 719
Loc: Ohio
Why do you guys prefer power to vacuum?
_________________________
KB-FXDLI. GC ist für deutsche Amerikanerautos der Auto-nicht

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#787913 - 12/14/06 07:16 AM Re: Brake bleeding: pressure or vacuum? [Re: KBFXDLI]
HTSS_TR Offline


Registered: 04/17/06
Posts: 19528
Loc: Lake Forest, CA
With Motive Bleeder you don't worry about low brake fluid in reservoir if you have enough fluid in the bleeder tank. With vacuum tool, you need to watch the old fluid comming out of bleeder valve and also watch and top off fluid in the reservoir.
_________________________
'00 MB E430
'04 Honda S2000
'06 Volvo V70
'14 Honda Accord LX
"Throwing food away is like stealing it from the poor and hungry" Pope Francis

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#787914 - 12/14/06 07:46 AM Re: Brake bleeding: pressure or vacuum? [Re: HTSS_TR]
unDummy Offline


Registered: 02/01/03
Posts: 8756
Loc: RI
Read my comments in the thread "MityVac Evacuator -Bleed Brakes First Time" in this forum.

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#787915 - 12/14/06 07:55 AM Re: Brake bleeding: pressure or vacuum? [Re: unDummy]
bdcardinal Offline


Registered: 06/03/05
Posts: 10992
Loc: Santa Barbara, CA
i use a mityvac, MATCO rebranded, shop air powered vacuum bleeder at work. works really well and will draw about 2 quarts in a minute. i dont have to worry about the master leaking down because i use an auto refiller. basically its a little tank you put on the master and it will drip brake fluid while the level drops.
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Opinions expressed are my own.

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#787916 - 12/14/06 02:22 PM Re: Brake bleeding: pressure or vacuum? [Re: bdcardinal]
Big Jim Offline


Registered: 09/24/04
Posts: 1571
Loc: Thousand Oaks, CA
This is one of those cases where it is good that there are different tools and techniques available.

There is no one best answer for all cars. By know the different methods available, alternatives can be used when the system doesn't respond to your normal method.

I like the vacuum method. It almost always works for me. With the right tool is is quick and painless. Sometimes with a stubborn system other methods need to be applied including the two person bleed, pressure, and gravity.

Which system works when all else seems to fail? Gravity.

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#787917 - 12/14/06 08:21 PM Re: Brake bleeding: pressure or vacuum? [Re: Big Jim]
KBFXDLI Offline


Registered: 01/30/06
Posts: 719
Loc: Ohio
I have a motive extractor and they give you a hose for brake bleeding with it. I have a new vehicle and am considering bleeding the system once a year as part of my annual routine. Do you guys bleed the furthest wheel first or last?
_________________________
KB-FXDLI. GC ist für deutsche Amerikanerautos der Auto-nicht

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#787918 - 12/14/06 11:02 PM Re: Brake bleeding: pressure or vacuum? [Re: KBFXDLI]
HTSS_TR Offline


Registered: 04/17/06
Posts: 19528
Loc: Lake Forest, CA
Farthest wheel first: Passenger rear, driver rear, passenger front and driver front last.
_________________________
'00 MB E430
'04 Honda S2000
'06 Volvo V70
'14 Honda Accord LX
"Throwing food away is like stealing it from the poor and hungry" Pope Francis

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#787919 - 12/14/06 11:08 PM Re: Brake bleeding: pressure or vacuum? [Re: HTSS_TR]
Laminar Lou Offline


Registered: 03/09/06
Posts: 1383
Loc: Agrestic, CA
I've got both setups. I like the pressure bleeder better because I don't have to lug the hand vac setup to each brake. I just slip on a hose and turn the bleeder until I see the new fluid.

I alternate a blue fluid with an amber fluid so I can see when everything is purged (although that would obviously work for a vacuum method).

I have a Motive and a Mighty Vac. I use the might vac on the motorcycles but switched to speedbleeders on them.

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#787920 - 12/15/06 05:47 AM Re: Brake bleeding: pressure or vacuum? [Re: Laminar Lou]
KBFXDLI Offline


Registered: 01/30/06
Posts: 719
Loc: Ohio
I think I am sold on the motive power bleeder because I'll always be doing this alone.
_________________________
KB-FXDLI. GC ist für deutsche Amerikanerautos der Auto-nicht

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#3492324 - 09/24/14 03:28 PM Re: Brake bleeding: pressure or vacuum? [Re: HTSS_TR]
volodymyr Offline


Registered: 09/13/14
Posts: 444
Loc: Switzerland
HTSS_TR,

Originally Posted By: HTSS_TR
With vacuum tool, you need to watch the old fluid comming out of bleeder valve and also watch and top off fluid in the reservoir.



Actually there are several vacuum kits which allow you to hook a bottle with new fluid to reservoir so it does not get dry.
_________________________
2001 Honda CBR 600 F4i, Castrol Power 1 Racing 4T 10W40 (SM,MA2)
2010 Nissan Qashqai 2.0, Shell Helix Ultra 5W30 (A3/B4,MB 229.5,502.00/505.00)

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#3492329 - 09/24/14 03:32 PM Re: Brake bleeding: pressure or vacuum? [Re: bdcardinal]
volodymyr Offline


Registered: 09/13/14
Posts: 444
Loc: Switzerland
Hello bdcardinal,

Originally Posted By: bdcardinal


i use a mityvac, MATCO rebranded, shop air powered vacuum bleeder at work.



I am considering to buy vacuum bleed kit, however since I don't have compressor I need to choose it as well. Can you tell me if any cheap compressors which work from accumulator battery will do the job? Any hints on minimum pressure of the system are also welcomed ...

Thanks!
_________________________
2001 Honda CBR 600 F4i, Castrol Power 1 Racing 4T 10W40 (SM,MA2)
2010 Nissan Qashqai 2.0, Shell Helix Ultra 5W30 (A3/B4,MB 229.5,502.00/505.00)

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