I know it's the brake booster because there is a loud hiss when my car is running and then if I hit the brakes, the hissing stops, coupled with an extreme loss of brake power/increased need for foot pressure when braking.
The question is, if I switch out the brake booster, will I have to bleed the brake lines or is that only if I disconnect the brake lines? the plan is just to move the master cylinder over a bit and not disconnect it or the brake lines. There seems to be plenty of room to get the booster out without having to go crazy. I'm asking because I don't know if I feel safe doing a full-on brake overhaul, so in that case I would have to pay a mechanic.
Any thoughts would be appreciated.