Today I pulled my A12 out making way for the L series after alot of oh F#$%! and the ol' A series was out then i went to push my car out of the shed to clean the filthy oily mess I made on the floor and the brakes had seemed to built alot of pressure i tryed everything but its still got strong pressure the pressure is on and off so it would roll then lock suddenly what the hell i even checked if i had crushed any brake lines while pulling the A12 out but nothing not even a bent one whats going on guys i really need help if anyone can explain to me or help me out that would be great its got me stumped.

Jake

Sounds like either the master cylinder is stuffed or wheel cylinders, has it been sitting around for a while? Does it have a booster?

it has drums and it sits in the shed as it is unregisted and a project car but no booster but this problem only so suddenly happened today

did all four lock up, front only, rear only or only one wheel?

try cracking the brake lines. start from the master and work your way to the wheels. It should only slowly start to drip. If it squirts you know its holding pressure somewhere. Maybe master, wheel cyls etc

I didnt have time today to jack up the front and rear to find out which or how many were locking up

Cracking brake lines soory for my ignorance but ive never heard of this?

he means just loosen the nuts that connect the brakelines up to the brakes

Just means undoing the lines where they go into either the cylinders or the master.
Jack it up first and find out which one is grabbing.

ok thanks boys so you think maybe there might be a block in the line or what?

yeh the master may be jammed and holding pressure in the lines. or a flexi line could be doing it