this is a cross-post from the FJ60/62 board, it was suggested I ask here as it may be an issue with diesels only. Today, the brakes in my HJ60 have been acting wierd. It's almost as if it's not holding vacuum. When I first pump the brakes, the pedal is dead, but the more i pump, the more firm the pedal gets. Then, as i drive, it looses it's firmness. When I first noticed this problem, I noticed the parking brake was dead, wasn't doing a thing. I pumped the brakes trying to build pressure, and now it is terribly hard to pull up and has a really jerky motion. The only thing I can relate it to is the feeling you get with a hand saw skipping across wood. The possible things that caused this, that I can think of are: 1) I was test fitting a bracket for my A/C compressor, handed it to my friend, and he set it directly on to the battery. It connected the frame with the positive terminal. Sparks and smoke shot out of both batteries, and smoke came from the rear passenger side of the engine bay. The only thing i could find back there that the smoke came from are some hydroliv lines that I think are the brake lines. 2) I checked the brake fluid and removed the cap. I am thinking that maybe it is not making a seal again, no matter how well I think I am getting a good seal. It has been suggested to check the brake booster which will happen tongiht. Anyone have any other ideas of what would cause this?