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Avenger & Sebring Coupe (4-Cylinder)

  1. Release fuel pressure. See 4-CYLINDER FUEL PRESSURE RELEASE  . Remove protective cover from service valve on fuel rail. Connect Fuel Pressure Gauge (C-4789) on fuel rail service valve.
  2. Turn ignition on. Using scan tool, select FUEL SYSTEM TEST to actuate fuel pump. Ensure fuel does not leak from fuel rail service valve. Observe fuel pressure. Fuel pressure should be 47-50 psi (330-350 kPa).
    CAUTION: When using scan tool to actuate fuel pump, fuel pump relay will remain energized for 7 minutes or until ignition is turned off.
  3. If fuel pressure is less than specified, check for clogged fuel filter, faulty fuel pressure regulator or faulty fuel pump. If fuel pressure is more than specified, check for faulty fuel pressure regulator or clogged fuel return line.
  4. Using scan tool, repeat FUEL SYSTEM TEST with ignition on. Turn ignition off, and observe fuel pressure. Fuel pressure should hold for 2 minutes. If fuel pressure drops gradually, check for leaky injector or faulty fuel pressure regulator.
  5. If fuel pressure drops sharply immediately after engine is stopped, fuel pump check valve is stuck open. Replace fuel pump.
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