faulty brakes

[señordos]

I have a 1992 Mr2 n/a and sometimes when I press the brake pedal it sinks to the floor without actually braking until the very last minute. But if I press it down a couple times it works fine, so most of the time I have to press 2 times for the brakes to work properly. Anyone had a similar problem? what might be the cause?

[ac427cpe]

air bubbles, just bleed your brakes.

[señordos]

bleed the lines or from the master cylinder it self? what about the lines that go to the wheels, would I have to bleed them too? thanks.

[JekylandHyde]

I would think it might be the master cylincer going out.

[ac427cpe]

a master cylinder costs a bit more than a jug of brake fluid... i would bleed the brakes from the wheel lines, and if that doesn't fix it then look into a new master cylinder.

[señordos]

thanks for the input guys. hopefully i just need to bleed the lines.