Fuel Pressure: Testing and Inspection
WARNING: Before servicing or replacing any components in the fuel system, reduce the possibility of injury or fire, refer to Service Precautions.^ Key Off.
^ Before releasing fuel system pressure at the schrader fitting, observe the Service Precautions to avoid fuel spillage and injury.
^ Install the fuel pressure tester.
STO Connector:
^ Ground the fuel pump lead of the Diagnostic Connector with a jumper.
^ Key On, Engine Off to operate the fuel pump.
^ Verify that the observed fuel pressure is within specified limits.
Specifications:
Key On Engine Off 240-310 kPa (35-45 PSI)
Key On Engine Running (Idle Speed) 240-310 kPa (35-45 PSI)
NOTE: Maximum fuel pressure is obtainable with the vacuum hose removed from the fuel pressure regulator or at Wide Open Throttle (WOT).