Brake Master Cylinder Bleeding

[David Pozzi]

Jeff,
Do you get air at the calipers too?
could it be sucking air past where the bleeder hose goes over the bleeder?



Run the hose upward 4 or 5 inches into a container and keep the end of the hose even with the top of the container, this will prevent siphoning and see if you still see bubbles in the line.

Articles say don't depress the brake pedal fully because it may push the MC piston past it's normal travel area and into a cruddy part of the MC bore which may damage the MC piston and cause a failure of the MC.

You can do a quick reverse bleed by putting a c clamp over the caliper and pushing the piston back a bit. This pushes fluid into the master cyl and reservoir pushing air out.

The metering valve on the front line can leak air into the front. If you suspect it, remove it and replace the line with a short bundy flex piece. You won't notice it gone.
David