Before I get started with tearing into the brake system to try and find the problem I figured I would see if anyone can lead me in the right direction. Just two days ago the brakes on my 2000 Disco are extremely hard with pressure I almost have to stand on the brakes to stop the truck, it is defiantly not normal, I just changed the rotors and pads a couple of months ago so I know it’s not that and the fluid is full… The 3 amigos have been on for about 3 months before this problem started after the brake job. I am figuring I should start with the brake booster...any ideas on what it could be?? Thanks in advance.

 

Yeah sounds like a bad booster or u have a vacum leak on the hose that goes to the booster

 

i 2nd the booster or a vacuum line being at fault. If i remember you can test boosters with a simple test.. start with the rover turned off, press the brake peddle a few times and it should become very stiff, now dont take your foot off the break and start the car. If the booster is working you should feel the peddle move down towards the floor.. if not then i say for sure its the booster/vacuum.
In guess its more likley be a leak in a vacuum line that the booster itself.