1992 Miata low brake pressure.
Okay for the past month or so me and my friend have been trying to figure out whats going on with his brakes. As soon as he turns the engine on he looses brake pressure. He can sit there and pump up the brakes before the key is on and they are very stiff. But as soon as the engine is on he has almost no brakes. We have bled each line and checked for leaks many many times. Anyone have any ideas?