G6 L4-2.4L VIN B (2006)
Fuel Pressure Regulator: Description and Operation
FUEL PRESSURE REGULATOR
The fuel pressure regulator (2) is contained in the fuel sender assembly near the fuel pump outlet. The fuel pressure regulator is a diaphragm relief valve.
The diaphragm has fuel pressure on one side and regulator spring pressure on the other side. The fuel pressure regulator is not vacuum biased. Fuel
pressure is controlled by a pressure balance across the regulator. The fuel system pressure is constant.