Originally Posted by sonicgundam

disagree. booster failures cause hard pedal, not super soft. he's describing a spongy or soft pedal.

for soft pedal, bleed the brakes. you either have dirty/boiled brake fluid, or air in the brakes. bleed the system, and hopefully it fixes the problem. also, it's a very cheap fix and a regular maintenance item, so if it doesn't work, it's still a good thing to do anyway.