FC1 - Check Fuel Pressure Regulator For High Pressure

WARNING: Before starting these tests, release the fuel pressure from the fuel system to reduce the risk of injury or fire, as outlined in Service Precautions.

^ Check the fuel pressure regulator housing for damage or dents that could cause a higher spring load on the fuel pressure regulator.

^ Check the integrity of the fuel pressure regulator diaphragm, refer to Test Step FB3.

^ Is the fuel system free of defects that could cause the fuel pressure regulator to produce excessive fuel system pressure?

YES -- Go to FC2. FC2 - Check Fuel Return For Cause of High Pressure

NO -- Repair or Replace damaged components as required. Repeat Test Step F1. F - Fuel Pressure Test If the pressure is still high, Go to FC2. FC2 - Check Fuel Return For Cause of High Pressure