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Holding Fuel Pressure (Rio & Spectra)

  1. Release fuel pressure. See FUEL PRESSURE RELEASE . Disconnect battery negative cable. Install fuel pressure gauge on to high-pressure fuel line. For Rio, see Figure. For Spectra, see Figure. Connect battery negative cable.
  2. Jumper DLC terminals FUEL PUMP and (B+). DLC is located on left side of engine compartment. See Figure. Turn ignition on for 10 seconds or less to operate fuel pump and pressurize system. Turn ignition off and remove jumper wire.
  3. On Rio, check fuel pressure after 25 minutes. On Spectra, check fuel pressure after 15 minutes. See FUEL PRESSURE SPECIFICATIONS  table. If pressure is not as specified, check fuel pump, pressure regulator and injectors.
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