no brakes..help

[19904x4mike]

hello everyone
wellmy 90 4runner has no brake pressure..
ive recently changed the brake calipers up front and the brakes worked fine for a few weeks..
now i have no pressure at all and no stopping power...duuuee
any parts that would need changing in a 4runner this old that would cause this??
also if theres a busted line how would i go about finding the leak/source of it???
if it helps the truck has less then 95000 miles
any help would be greatly appreciated...thanks folks

 

[fourwd1]

Did you bleed them properly?

LR
RR
RF
LF
LSPV

If there's a busted line the MC will be low/empty, and there will be a puddle. Look.