Fuel Pressure: Notes

Basic diagnosis of fuel system should begin with determining fuel system pressure.

CAUTION: High fuel pressure may be present in fuel lines and component parts. Relieve pressure before attempting to open system for testing or component replacement. Do not allow fuel to flow onto engine or electrical parts. Do not permit open flames in area while testing fuel system components.

Remove fuel tank filler cap to relieve fuel tank pressure. Remove Black fuel supply tube from fuel rail using Fuel Line Disconnect (6182). See Fig 1 .
Install Fuel Tube Adapter (6175) between Black fuel supply line and fuel rail. Attach 0-60 psi Fuel Pressure Gauge (5069) on port of fuel tube adapter. Start engine and check fuel pressure. Fuel pressure should be 28-30 psi (2.0-2.1 kg/cm² ).

Fig 1: Disconnecting Black Fuel Supply Tube At Fuel Rail

Courtesy of CHRYSLER MOTORS.