This Kia has about 150,000 miles, the engine was swapped about 4 years ago after the timing belt jumped. Last year, I was driving and went to apply the brakes and the pedal went to the floor and would not stop. I used a snowbank to stop. Got the car towed home and there is sat. I started working on it and first bled the brakes and looked for any leaks, found none. Then I read this Kia needs to have Right rear, then Front left then left rear then front right so I did that as well, and still nothing. Some signs indicated a bad master cylinder so I bought a new one. I bled it similar to Scotty's method of doing it in the car for "Bench bleeding it. Then I got a scanner to cycle the ABS module and did that as well. Still, start the car and the pedal goes to the floor. Could it be the brake booster? It doesn't seem to have the symptoms of a bad vacuum.
I'm about ready to junk this car but it's nice to have a spare in the event of a breakdown with my other car. I have even had someone pump the brakes as I look for a leak. Found nothing at the calipers now on the ground from a rusty line. NY state loves their road salt!
Total failure of the hydraulic system is usually caused by the master cylinder unless you're unlucky enough to get leaks in both brake circuits at the same time.
That does not sound like the correct bleeding sequence. The correct one is right rear, left rear, right front, left front. Right is passenger and left is driver.
