Quote Originally Posted by bail View Post
From time to time i can hear hissing or whistling sound coming from the left side of the car but when i hit the breaks it will stop. But everytime i hit the brakes hard, i can hear some noise. I also noticed my break fluid keeps on decreasing with no visible leaks. ABS light is also on. What could be the main problem in my braking system? Corolla 1.6gli 1997 model 118k mileage
if there are no visible leaks at the four corners then check for leaks at the proportioning valve. if there's no leak e malamang sa may master cylinder. it is leaking fluid into the brake vacuum booster ("hydrovac")