James, When you step on the brake pedal the metering valve allows approx 3-30 psi pressure to the front wheels until the pressure at the rear wheels reaches a certain point (approx 120psi). After that it allows full pressure. If you are bleeding by having someone pump the pedal they will push hard enough to open the valve and allow fluid through. If you gravity bleed then the valve will allowby Bob Ferdenzi - Pontiac GTO Forum
James, When you step on the brake pedal the metering valve allows approx 3-30 psi pressure to the front wheels until the pressure at the rear wheels reaches a certain point (approx 120psi). After that it allows full pressure. If you are bleeding by having someone pump the pedal they will push hard enough to open the valve and allow fluid through. If you gravity bleed then the valve will allowby Bob Ferdenzi - Pontiac GTO Forum