Test NS-4B - Correcting Fuel Delivery
WARNING: This page is about a different car, the 1995 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
High fuel pressure may be present in fuel lines. Open fuel system with caution. See FUEL PRESSURE RELEASE procedure.
- Ensure fuel tank is at least 1/4 full. Release fuel pressure. Turn ignition off. Disconnect fuel return hose from throttle body. Connect a 6-foot fuel hose to fuel fitting. Put other end of 6-foot hose into an approved 2-gallon or more capacity gasoline container.
- Turn ignition on. Using scan tool, actuate fuel system. Read fuel pressure gauge reading. Using scan tool, stop fuel system actuator test. See FUEL PRESSURE SPECIFICATIONS table. If fuel pressure is more than maximum specification, replace fuel pressure regulator. Perform TEST VER-1. If fuel pressure is less than maximum specification, go to next step.FUEL PRESSURE SPECIFICATIONS
Application psi (kg/cm2 ) Dakota 11.5-17.5 (.8-1.2) - Turn ignition off. Reconnect fuel return hose. Remove fuel return hose from fuel tank. Connect Fuel Pressure Test Adapter (C-6541) to disconnected return hose.
- Put other end of hose into an approved 2-gallon or more capacity gasoline container. Turn ignition on. Using scan tool, actuate fuel system. Read fuel pressure gauge. Using scan tool, stop actuation test. See FUEL PRESSURE SPECIFICATIONS table.
- If fuel pressure is less than maximum specification, repair restricted fuel pump module. Perform TEST VER-1. If fuel pressure is more than maximum specification, go to next step.
- Repair restricted fuel return line between throttle body and fuel tank. Perform TEST VER-1.