Fuel Pump Maximum Pressure

Perform pump operation inspection if regulated pressure is not as specified.

1. Disconnect negative battery terminal.
2. Release fuel system pressure. See RELEASING FUEL SYSTEM PRESSURE  .
3. Remove rear seat cushion.
4. Connect SST (OK2A1 131 001)  to main fuel line as shown.
   Fig 1: Testing Fuel Pump Maximum Pressure

   Courtesy of KIA MOTORS AMERICA, INC.
5. Connect 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. See RELEASING FUEL SYSTEM PRESSURE  .
6. Connect data link connector terminals FUEL PUMP and B+ with jumper wire.
   Fig 2: Illustrating Fuel Pump Jumper

   Courtesy of KIA MOTORS AMERICA, INC.
7. Turn ignition switch ON.
8. Measure fuel pump maximum pressure.

   Fuel pump maximum pressure: 

   65-94 psi (450-650 kPa, 4.5-6.5 kg-m) 

9. If not within specification, replace fuel delivery module.