I just finished rebuilding the brake system on my 48 Plymouth coupe. First I removed all cylinders and flushed the lines. I then installed all new wheel cylinders, hoses and shoes, the master cyclinder looked like it had been replaced by the previous owner, so I just took it apart lightly honed it and installed a rebuilt kit. Once every thing was back together, I bled the brakes and everything seemed fine for a couple of weeks. Now when I take it out and drive it for a while, the brakes (mainly the rear) seem to get tight and I loose all travel on the peddle. They don't lock up, but the system seems to stay pressurized and the brake light stays on, until the car sits for a while and the pressure bleeds down.

I just came back from a drive and when I returned home I check the rear drums they are farely hot, the fronts are only warm, so I jacked up the car and the rears were real tight the fronts were also tight but not near as bad.

I'm sure that after an hour of sitting the brakes will bleed down. Most people I have talked to say it is the master cylinder or could be a clog in one of my lines or the manifold where the brake light pressure switch is mounted.

Does anyone have any sugestions where I should start, I hate to remove the master cylinder first, if it could be something easier.

Tim: