Vacuum Brake Booster

Brake Fluid Pressure Without Engine Running:
Pedal Force / Fluid Pressure:
147 N (33 lbs.) 588 kPa (85 psi)
294 N (66 lbs.) 1,667 kPa (242 psi)

Brake Fluid Pressure With Engine Running And Vacuum At 66.7 kPa (19.69 inHg):
Pedal Force / Fluid Pressure:
147 N (33 lbs.) 5,394 kPa 782 psi)
294 N (66 lbs.) 10,003 kPa (1,450 psi)