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, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. 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 line from fuel pressure regulator. Connect Fuel Pressure Test Adapter (6541) to fuel return line. Place other end of adapter hose into an approved 2-gallon gasoline can.
- Turn ignition on. Using scan tool, actuate fuel system. Read fuel pressure gauge. 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 ), turn ignition off. Inspect return line for restriction. Replace return line if required. Perform TEST VER-1. If return line is okay, replace fuel pressure regulator. Perform TEST VER-1.
- Stop fuel system actuation. 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 adapter hose into an approved 2-gallon or more gasoline container.
- Turn ignition on. Using scan tool, actuate fuel system. Read fuel pressure gauge. Using scan tool, stop actuation test. If pressure is less than 53 psi (3.7 kg/cm2 ), repair restricted fuel pump. Perform TEST VER-1. If pressure is more than 53 psi (3.7 kg/cm2 ), repair restricted fuel return line between fuel rail and fuel tank. Perform TEST VER-1.