1992 Dodge Caravan Base 6 Cyl 3.00L
Brake Master Cylinder, no brake pressure on the both rear drums
Replacing a brake master cylinder, the front disc brakes have a brake pressure, but the rear drums, no pressure at all. Wondered if there is a proportional valve because there are two brake lines run from the master cylinder .
Why don't you try bleeding the rears and see if fluid or air come out. This is a must when doing the master. Plus the master needs to be bench bled.