From the booster, to a vacuum source on the engine.
Just about all GM Quadrajet equipped cars have the brake booster mounting at the rear of the carb on the base plate. Should be a threaded fitting.
The vacuum hose on the brake booster typically connects to the intake manifold of the engine. This connection allows the brake booster to utilize engine vacuum to assist in applying the brakes, making it easier to press the brake pedal. In some vehicles, the hose may also connect to a dedicated vacuum source or a vacuum pump, especially if the engine does not produce sufficient vacuum at idle. Ensure the hose is securely attached and free of leaks for optimal brake performance.
you need manifold vacuum for the brake booster.. (intake manifold)
To replace the brake booster on a 1999 Chrysler LHS, first, disconnect the negative battery terminal and remove the master cylinder by unbolting it from the brake booster and moving it aside without disconnecting the brake lines. Next, remove the vacuum hose and the mounting bolts holding the brake booster to the firewall. Once free, replace it with the new booster, reattach the vacuum hose, and reinstall the master cylinder. Finally, reconnect the battery and check for proper brake function.
To remove the brake booster on a 1963 Buick Riviera, start by disconnecting the negative battery cable for safety. Next, remove the master cylinder by unbolting it from the booster and disconnecting the brake lines. Then, detach the vacuum hose and the mounting bolts securing the brake booster to the firewall. Finally, carefully pull the brake booster out of the engine compartment.
check the brake booster vacumme hose,its the hose than runs from the intake to the brake booster. if its leaking air the car stall when you hit the brakes or has no power
To remove the brake booster from a Lincoln Mark VIII, first, disconnect the negative battery cable and remove the master cylinder by unbolting it from the brake booster and moving it aside. Next, detach the vacuum hose and any electrical connections from the brake booster. Remove the mounting nuts securing the brake booster to the firewall, then pull the booster out of the engine compartment. Ensure you have the appropriate tools and follow safety precautions throughout the process.
Vacuum brake booster is defective or the hose going to the booster is leaking.
the brake vacuum booster connects to the intake manifold all by itself and the PCV valve hose should hook directly to your carburetor.
To vacuum test a brake booster, first ensure the engine is off and the brake pedal is fully depressed to release any residual pressure. Next, disconnect the vacuum hose from the brake booster and attach a hand-held vacuum pump to the booster’s vacuum port. Apply vacuum using the pump; the gauge should hold steady pressure if the booster is functioning properly. If the vacuum drops significantly, it indicates a leak or failure in the brake booster.
The cause of hard brake pedal is malfunctioning brake booster. Check the hose from the intake manifold going to the brake booster for cracks or leakage, replace if necessary. Check the one way valve located in the middle of that hose, make sure the valve opens when you put pressure on one port.. If all those mentioned are ok, the booster itself needs to be replaced....
I would say a power brake booster or a brake booster would be the same.