Fuel Pressure Regulator
The pressure regulator consists of a sealed, spring loaded diaphragm with a connection for intake manifold vacuum. Fuel is provided to fuel injectors under 36 psi (2.5 kg/cm2 ) pressure.
A connection for intake manifold vacuum provides a constant pressure differential which ensures that the amount of fuel injected is solely dependent upon injector "OPEN" time. Fuel in excess of fuel pressure or pressure differential is returned to fuel tank. No service of pressure regulator is required.