Test NS-4B - Correcting Fuel Delivery
WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. 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 fuel rail. Connect a 6-foot fuel hose to fuel rail return line. 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. Using scan tool, stop fuel system actuation. Turn ignition off. If pressure is less than 53 psi (3.7 kg/cm2 ), go to next step. If pressure is more than 53 psi (3.7 kg/cm2 ), replace fuel pressure regulator. Perform TEST VER-1.
- 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 fuel system actuation.
- If pressure is less than 53 psi (3.7 kg/cm2 ), repair restricted fuel pump module. Perform TEST VER-1. If pressure is more than 53 psi (3.7kg/cm2 ), repair restricted fuel return line between fuel rail and fuel tank. Perform TEST VER-1.