check if your passenger side wheel cylinder isnt leaking, sounds like you a got alot of air in their tho, get a bottle, get a peice of rubber piping in the lid going all the way to the bottom of the bottle, poke a breather hole in the bottle, make sure the rubber bit fits tightly on the nipple, open the nipple and pump the pedal, this allows no air to go back in the system but only fluid to come out
