Brake issues...

[dlr281]

I got in Mounty to move it to other side of the driveway and noticed the brake light was on. I checked the master cylinder and it was low so I added some fluid and the light went out. Later that day I drove it and the pedal went all the way to the floor before it would stop and the light came on again. I pulled over at a gas station and had to add more fluid. I got another mile or so and stopped to check it and it was idleing rough. I opened the hood with engine running and can hear a vacuum leak. I'm thinking brake booster, can anyone shed some light on this for me?

 

[corkey]

check all the flex lines at each wheel too, if they are dripping, change them,
if the fluid is going through the brake booster into the intake than it will show in the tailpipe as blue smoke,, as the engine is burning it off,

 

[dlr281]

OK I lost the vac. plug by the dipstick again. I made one out of an old bolt and hose, so now it runs again.... On to the brakes I did some looking around and its all wet back by the rear end on the drivers side so I'm assuming its the hard line going over the center section of rear end. I'll post back after I get it fixed...