so i pulled off the uim and laid it down to the side and brake fluid came out odf the vacuum hose?? reasons ?
1. bad master cylinder?
2. brake booster has pin hole in diaphram?
3. is there a check valve thats supposed to be there?

dont know whats up but the brake are fine and the fluid need topping off every three or four days ..

 

The brake master cylinder is kaput. Remove and replace same.

 

thx thats what i thought but had to ask

 

If you are adding fluid that often, it's going somewhere. And if you don't see a leak at any of the calipers, lines or master cylinder, it is likely leaking out the back of the master cylinder into the booster. Remove the master cylinder from the booster to see if fluid is, in fact, leaking out the rear into the booster.

Not sure how fluid would get from there to the UIM though. Seems like a long trip from were the vac line attaches to the engine housing. The check valve shown at the booster in the FSM allows flow away from the booster.

 

Definitely the real seal in the master cylinder.
The fluid leak will be filling the power brake booster. There is likely no external leak, since there is a gasket between the master cylinder and the brake booster.
The check valve (only on TII's) allows air flow towards the engine. This is to prevent the boost from the turbo intake from pushing the brake booster diaphragm in the wrong direction.