Ok another tip. You need to take all the pads out and push ALL the pistons full in. Then remove the furthest bleed nipple. Then let the fluid run out under gravity, no pressure. What can happen is you get an airlock behind a piston. You need to do this to all the calipers until you get a good flow of fluid. Once you have done that. Start at the rear and again slacken the nipple, then depress the pedal, at the bottom of the stroke tighten the nipple, repeat this for about 10-20 strokes. Doing it this way keeps the piston fully in, and that way you will get all the air out. Once the rear is bubble free, on the last depression of the pedal try and shut the bleed nipple half way through the stroke. Repeat then after you have done that you can press the pistons back into contact with the pads. You will now have perfect brakes. You will use a lot of fluid doing this and you need to keep the reservoir full, or you will be back to square one. Remember the clutch as well. You don't need any fancy tools just a 11mm spanner some clear tube and a friend. Easiest done on a 4 post lift or on axle stands.