Mazda 3 Break pedal is soft and go low

[bitingbugz]

So this is a thing which me and my repair guy is trying to solve from weeks
now. My Mazda 3 Sport edition hatchback 2007 has a soft break pedal.
Now the pedal was all fine until one day it became soft.

I went to my repair guy, he checked there is no leak in the brake lines, tells
me we need to replace the brake master cylinder. We replaced the brake
master cylinder but the pedal is still soft, goes a little bit down that the usual
but stops say an inch before it hits the floor. The brakes are working totally
fine. The repair guy took it to a ride with me, we hit the brake in a parking
lot on high speeds, low speeds everything, it always stops properly, no
problem there. I thought it will get better now that I have a new master
cylinder but it didn't . Anyway, I forgot we had installed new rotors on all 4
tires a month ago and brake pads are fine too. So I came back to the
mechanic saying I am not satisfied and the brakes freak me out even
though they are still working. We got new master cylinder from raybestos
as i was under warranty , bled it properly again this time opened the tires
as well. Bled each individual brake lines on the side. Did everything. I was
sitting in the car pumping and then holding. We bled it like many times. But
the pedal is still the same.

The first couple or three inches, the pedal just goes down without any
brake whatsoever and then brakes after that. It never used to be like this
until now. Mechanic says the brake booster is working fine so t cannot be a
problem with that. That is the only thing I guess we have not changed. He
drives and says it's fine but I know it is not and it is freaking me out. Don't
now what to do

[SomeGuy]

Take it to the Mazda dealer.

[Fuman]

sounds more like the brake booster than the master cylinder.

[roachkillah]

i had almost an identical problem.
pedal got soft suddenly, after diagnoses we decided to replace the master cylinder.
it was bench bleed, once installed we bleed the lines.
it seemed better, but the pedal was too low for my liking.
drove like this for months, one day i had to do a panic stop, ABS kicked on, i don't know if it was coincidence but after that the pedal went to its normal position.

[warrior76]

Friend of mine had a similar problem with his 3. Mechanic did a couple hard stops to engage the ABS and it reset it and he's had no problems since and that was a couple months ago.

[kaleshnikov]

Try the above, and if all else fails, go to Jimmy at Street Performance.