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Home >> Kia >> 2003 >> Spectra GSX, Automatic >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery System >> Fuel Delivery System >> System Checks >> Fuel Pressure Hold Inspection

Fuel Pressure Hold Inspection

  1. Disconnect negative battery terminal.
    WARNING: The fuel system remains under pressure when the engine is not running. Release fuel system pressure before disconnecting any fuel line to reduce the chance of personal injury or fire damage to vehicle components.
  2. Release fuel system pressure. See RELEASING FUEL SYSTEM PRESSURE  .
  3. Install SST(OK2A1 131 001)  to service port located on center of fuel rail.
    Fig 1: Illustrating Fuel Pressure Hold Test
    G02537266Courtesy of KIA MOTORS AMERICA, INC.
  4. Connect negative battery terminal.
  5. Connect data link connector terminals FUEL PUMP and B+ with jumper wire.
    Fig 2: Illustrating DLC Pinout
    G02537267Courtesy of KIA MOTORS AMERICA, INC.
  6. Turn ignition switch ON for 10 seconds to operate fuel pump.
  7. Turn ignition switch OFF and remove jumper wire.
  8. Inspect fuel pressure after 15 minutes.

    Fuel pressure: 

    1. More than 25 psi (180 kPa, 1.8 kg/cm 2  ) 
  9. If not as specified, inspect the following components:
    • Fuel pump
    • Pressure regulator
    • Injectors
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