Brake Help! ~ brake booster maybe?
 

I replaced 4 rotors, 4 calipers, and has 4 stainless steel lines. I also changed all vac lines in the engine bay.

Stopping is a pain in the royals ass right now. I'm not sure if it sbecause the new rotors weren't milled down (istalled new, seller said they were ok...???). If its a bleeding problem (just rebled last night, no air bubles) of if it could be something else.

I have the brake booster hooked up to the thing in the LIM. Is there anything that could be causing it not to vac?

I remember with the auto, you could push down on the on the brake wth the engine off, start the car, and the vac would pull the pedal another .5-1" lower. I don't ge that affect now. I can push down on the pedal, and when i start the car, i don't notice any affect. (5spd swap + emissions removal)

thank!

EDIT: How dificult? When I step on the brakes, I don't really slow down. when I apply some pretty good pressure, start to slow down well. When I stand (all force, plus me pushing back into the seat for leverage) on the brake, tires lock up. Its bad enough that going down a 45ish degree incline a mile long, I had to engine brake to keep from going fast (that or stand on the brake for that long ass time)...

Any ideas? It really feels like there is no brake booster help...

Re: Brake Help! ~ brake booster maybe?
 

There needs to be a check valve in that 3/8" hose..

pull those hose with the motor running and feel for vac. Also they can be a pain to bleed mine took two huge bottles of fluid to bleed it

uhh... there needs to be a check valve? there wasn't stock? Just connectedrigt up to the thing on the lim?

DAHH!! S5 FSM Page P-31. "Inspection of Check Valve"

Ok guys... where do i get a new hose or special check valve?

$30 dollars for that stupid thing.. almost worth my efforts to search through the trash to find the old one

Installed new vacuum hose /w checkvalve.

Brakes work 150%!!! I knew the completely new/rebuilt brake system was missing something. They lockup on a dime. Perfect :) Thanks for the help guys, I would have been stumped!