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Home >> Dodge and Ram >> 2000 >> Durango 4.7 N, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Engine Controls - Basic Engine Testing - Gasoline) >> Fuel System >> Fuel Pressure Test >> Vehicles With Fuel Rail Test Port
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Vehicles With Fuel Rail Test Port

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1999 Dodge Ram Wagon, 1999 Dodge Ram Van, 1999 Dodge Pickup, 1999 Dodge Durango, and 1999 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect negative battery cable. Release fuel pressure. See FUEL PRESSURE RELEASE . Install fuel pressure gauge with hose on fuel pressure test port.
  2. Start engine and allow to idle. Fuel pressure should be 44-54 psi (3.1-3.8 kg/cm2 ). If no fuel pressure exists and engine will not start, fuel pump relay and control circuit may be defective. See FUEL PUMP RELAY .
  3. If fuel pressure exceeds specification, fuel pump is okay, but fuel pressure regulator is defective. Replace fuel pressure regulator. Fuel pressure regulator is incorporated with the fuel filter. Fuel filter/fuel pressure regulator is located on top of fuel tank, in fuel pump module. See REMOVAL, OVERHAUL & INSTALLATION - TRUCKS & RWD VANS - GASOLINE article.
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