I Have A 91 Lesabre,i Repaired A Rust Brake Line With A Pressure Hose And Now After Bleeding The Brakes I Have No Brake Pressure On The Pedal When The Car Is Turned On,but Have Pressure When The Car Is Off.i Have Replaced And Bled The Master Cylinder I Don't Know What Else To Do Please Help. Thanks

It must be getting air in the line or not all of the air is bled out yet. Did you bleed each wheel starting at the left rear>right rear>right front>left front? Also, are you using one of those vacuum bleeders? They work great.

How were the brakes before the rusted line broke through? Was the master cylinder okay? Were the brakes working well?

I Have A 91 Lesabre,i Repaired A Rust Brake Line With A Pressure Hose And Now After Bleeding The Brakes I Have No Brake Pressure On The Pedal When The Car Is Turned On,but Have Pressure When The Car Is Off.i Have Replaced And Bled The Master Cylinder I Don't Know What Else To Do Please Help. Thanks

MKEPRIOS

Welcome to AF's!

What are you calling a "High pressure hose" If it's anything but a brake hose it will NOT hold up to the PSI that's required for brakes.

Regards

Dan