[wiseguy50]

have a 40 plymouth with a 68 chevelle chasis and drums all around. am putting a power booster in( from a 84 caprice) so i had to by a power drum master cylinder. i bled the brakes and can only get fluid to the left front and right rear. cleaned the proportioning valve
but still the same results. any help is appreciated.

[troy-curt]

Have you tried bleeding the in the proper sequence? Right rear, left rear, right front, left front. And you may have a blockage.
Try gravity bleeding, if you don`t have access to a pressure bleeder. Good luck.

Troy

[chevy1]

Would you happen to be running the combination valve as well? If so, I think the valve is off center and blocking fluid flow to the other ports.

[troy-curt]

But would that happen with fluid at the front and the rear?

[Gene Neal]

Could be that it isn't Plumed right and Chevy1 is also right it could be the BRAKE FAILURE control valve. Is the indicator lite on? If so there are two ways to reposition the valve: One type you have to remove the sender switch and apply the brakes, this will allow the internal valve pine to move back to the center. Another way is to have someone to watch the indicator lite and someone else to (if brakes pressure is shut off to the rear) open the rear wheel cylinder bleeder just a bit. when the light goo's off close the bleeder. You got to be quick! Or you will then have to go to the Front brakes and try a gain, as will have moved to the other side of the valve. I have not seen them but I was told that there also is a type that has a pine that pop's out the side of the valve and you must reposition the pine manually ----------------------------------Gene Neal