I have a 2000 f-250 super duty v-10 and had to replace the master
cylinder. I tried bleeding the brakes and they are not holding
pressure, especially when the engine stars up. Is there something I
need to do diff from the usual brake bleed protocol?

steve97502 wrote:
When you say 'not holding pressure', does that mean when you put your
foot on the brake, the pedal slowly sinks to the floor and the brakes
release?

-phaeton

steve97502 wrote:
when you say you tried, what exactly do you mean? Did you get all the
air out? It seems that you didn't. After changing the master
cylinder, you might want to try using a pressurized bleeding method.

"steve97502" <steve97502 (AT) hotmail (DOT) com> wrote

Did you bench bleed the master before installing it?

Whitelightning