Fuel Pressure Regulator

Fuel pressure regulator is located on fuel sending unit assembly, on bottom of fuel filter. Fuel pressure regulator maintains fuel pressure applied to fuel injector 44-50 psi (3.0-3.4 kg/cm² ) more than intake manifold pressure. To test fuel pressure regulator, see FUEL SYSTEM PRESSURE TEST under BASIC FUEL SYSTEM CHECKS in BASIC TESTING article.