Mityvac brake bleeding

kenney255 · 03-10-2019, 05:36 PM

Has anyone else ever tried one of these vacuum pumps on the 370?For the life of me i cant get mine to start pulling the brake fluid from the calipers. I ended up bleeding them by having my GF pump the brakes and then went back to see if the pump would pull fluid and it still didnt. This is after swapping the base brakes to the akebonos. Im wondering if theres a trick or its just junk?

Jhill · 03-10-2019, 05:41 PM

I’ve done it multiple times with zero issues, not sure what your issue is.

fryzia23 · 03-10-2019, 10:07 PM

The best way to bleed the brakes is using pressure pumps like motive power bleeder. Doing this as a professional on daily basis, I never been a fan of vacuum brake bleeders.

Brendan · 03-10-2019, 11:21 PM

It's pretty junk. The motive bleeder is great. I have both and threw my hand held away after getting motive bleeder.

nis350 · 03-11-2019, 12:44 AM

I have a motive bleeder but haven't used it. I heard the hose can burst and some people use it without any brake fluid in case of hose failure.

What is the normal/safe pressure do you recommend?

Quote:

Originally Posted by fryzia23

The best way to bleed the brakes is using pressure pumps like motive power bleeder. Doing this as a professional on daily basis, I never been a fan of vacuum brake bleeders.

fryzia23 · 03-11-2019, 10:02 AM

Quote:

Originally Posted by nis350

I have a motive bleeder but haven't used it. I heard the hose can burst and some people use it without any brake fluid in case of hose failure.

What is the normal/safe pressure do you recommend?

Two years of pretty much every day use and no issues with hoses burst or break. It’s it’s a solid bleeder and I wouldn’t worry about it. I bet those issues people are having are mostly user error more than anything. Keep the pressure at 20psi. Between each caliper bled, give just give few pumps to bring it back again to 20psi as the pressure will bleed off.

JARblue · 03-11-2019, 10:07 AM

Don't go above 15 psi with a pressure bleeder. 10-12 psi should be more than plenty. And yes, it is a good idea to always pressurize the bleeder without fluid first so you can inspect the hoses and clamps for any leaks or problems without brake fluid spraying everywhere.

Vacuum pump > pressure bleeder for brakes. I have a much nicer vacuum pump now. My motive power bleeder is far superior to the cheap vacuum pumps (like a cheap Mityvac) but much more of a pain than a good quality vacuum pump.

03-10-2019, 05:36 PM	#1 (permalink)
kenney255 Base Member Join Date: Mar 2016 Location: canada Posts: 14 Drives: 16 nissan 370z Rep Power: 9	Mityvac brake bleeding Has anyone else ever tried one of these vacuum pumps on the 370?For the life of me i cant get mine to start pulling the brake fluid from the calipers. I ended up bleeding them by having my GF pump the brakes and then went back to see if the pump would pull fluid and it still didnt. This is after swapping the base brakes to the akebonos. Im wondering if theres a trick or its just junk?

03-10-2019, 10:07 PM	#3 (permalink)
fryzia23 Enthusiast Member Join Date: Dec 2010 Location: new jersey Posts: 452 Drives: 2011 MB 370Z NISMO Rep Power: 1245	The best way to bleed the brakes is using pressure pumps like motive power bleeder. Doing this as a professional on daily basis, I never been a fan of vacuum brake bleeders. physics, Brendan and ZontheRocks like this.

03-11-2019, 10:07 AM	#7 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Don't go above 15 psi with a pressure bleeder. 10-12 psi should be more than plenty. And yes, it is a good idea to always pressurize the bleeder without fluid first so you can inspect the hoses and clamps for any leaks or problems without brake fluid spraying everywhere. Vacuum pump > pressure bleeder for brakes. I have a much nicer vacuum pump now. My motive power bleeder is far superior to the cheap vacuum pumps (like a cheap Mityvac) but much more of a pain than a good quality vacuum pump. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

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03-10-2019, 05:41 PM	#2 (permalink)
Jhill Track Member Join Date: Mar 2016 Location: San jose Posts: 854 Drives: 2013 370z sport Rep Power: 3384	I’ve done it multiple times with zero issues, not sure what your issue is.

03-10-2019, 11:21 PM	#4 (permalink)
Brendan Track Member Join Date: Apr 2013 Location: Colorado Posts: 640 Drives: Poor man's Porsche Rep Power: 542	It's pretty junk. The motive bleeder is great. I have both and threw my hand held away after getting motive bleeder.