My brake petal is low

[wed3k]

yea the fluid is bypassing one of the seals for the piston.

[ChrisRHDJPN]

There could be air in the lines (which requires bleeding), there could be a leak on the master cylinder (which requires a swap and bleeding), or a seal on one of the caliper pistons went bad (which requires either a caliper swap or a rebuild, then bleeding). Bleeding is easiest done with 2 people BTW, and make sure to start at the wheel FARTHEST from the master cylinder and work towards it (ie. the rear passenger, then the rear driver side, etc.).

[93F22A6]

Just as a note cause this happened to my car. If you have bleed your brake good knows how many times and your brake pedal is still low. ( not like all the way to the floor but an inch or so lower than norm) Pull your caliper off and check the slider pins. I failed inspection twice cause of it. Just though I'd throw that in there.

[Crankshaft]

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i mean just to add i posted in here some time ago that this happened to me before but mine got bad to where it built no pressure, it was my mc but i decided to give the whole system a make over i changed rotors, mc,rebuilt pistons, pulled out and lubricated the pins, changed bleeder valves, used ceramic pads and changed some of the old lines. but that is just me

[Sneakerhead28]

i wass suppose to bleed em out today but snow messed up my plans but yea i was talkin to my mechanic and he said that i have to be very careful while bleedin em out

[AcCoRdKiD916]

I had the same problem and all it wuz that brake fluid wuz low but then it happen to me again and I found out I had a leak then I had to change my master cylinder and I got charged 500 bucks to replace it. So check everthin b4 you go replacing the master cylinder