Fuel System Pressure Test
- Release fuel system pressure. Remove cover from service valve on fuel rail. Connect Fuel Pressure Gauge (C-3292) and Adapter Hose (C-4799) to service valve. Connect Diagnostic Readout Box II (DRB II). Turn ignition on. Use Actuate Outputs Test "Auto Shutdown Relay" on DRB II to activate fuel pump.
- Check reading on testers after system is pressurized. Correct pressure reading should be 55 psi (3.9 kg/cm2 ) for turbo models.