Brake Problems

[BSeay]

ok today i was driving home and my brakes decided to lose pressure. It used to be that about 1/4 of the way down you would get pressure now i have to slam it to the floor to get any kind of pressure and it wont lock the tires. While i was sitting there in traffic today i was pumping the brakes and they would get pressure but as soon as i took off again nothing...

Car - 1995 240sx SE w/ completely stock braking system

I know there isnt any air in the lines because they had all been recently bled and were fine until today... MC maybe?

all input is appreciated

thanks in advance

[skatanic28]

my vote is for either BMC or perhaps a fluid leak.

[BSeay]

i checked the level of the fluid and it's the same as it was before, i'm thinking it's the BMC....

[skatanic28]

yep....sounds like it to me too.

[ledzeppelin240]

Master cylinder could be leaking internally, bleeder screw left open, Damaged or worn caliper piston seals, water-contaminated brake fluid...It could be many things but most likely the MC if everything else checks out fine.

[BSeay]

Thanks for the help fellas, i was thinking it was the MC and we'll find out if we're right later on in the week when it comes in.