Fuel Pressure Regulator
Fuel pressure regulator is located on top of throttle body assembly. Fuel pressure regulator maintains fuel pressure applied to fuel injector 26 psi (1.8 kg/cm2 ) more than intake manifold pressure. To test fuel pressure regulator, see TEST A1-7B - FUEL SYSTEM DIAGNOSIS/FUEL PRESSURE CHECK under CIRCUIT TESTS in the BASIC TESTING article.