Another brake bleed/MC/Booster problem thread

[Pete_89T2]

Originally Posted by infernosg

The one thing I don't do is fill the bleeder with fluid. That just makes a mess so I just leave it empty so air is pushing down on the fluid in the reservoir. Think this could be an issue?

It could be, are you saying that you don't put any fluid in the bleeder, and just use it to pressurize the fluid in the MC reservoir & system? You'll never manage to flush out all the air in the system with that small a volume of fluid.

Normally for a fluid flush & bleed, I'll dump a full quart of fresh brake fluid into the power bleeder tank, and it will take almost all of it to get to the point of zero bubbles and a solid pedal.

To avoid the mess at the end, do the following when you're satisfied the last brake has been fully bled:
1. Tilt bleeder tank such that the feeder tube at the bottom is no longer under fluid.
2. Crack open the bleeder screw on that last line, and let it slowly bleed out until the fluid level in the MC drops to the full line, then close the bleeder screw.
3. Carefully depressurize the bleeder tank by *slowly* loosening the pump piece from the tank. Make sure the tank is still tilted at this point so the feeder tube at the bottom is not immersed in fluid.
4. Now you can remove the adapter from the MC without the mess.