System Inspection: Notes

■ Check The Fuel Filter For Blockage 

Remove the fuel pump and check filter debris and clogging of the fuel supply line.

■ Check The Fuel Level 

If you run out of fuel significantly on ramp, it may be a factor of degradation of the fuel pressure.

■ Check Low-Pressure Fuel Supply Line Leakage And Blockage 

Low-pressure fuel supply line damage and blockage can be a factor of the fuel pressure drop.

■ Check Fuel Pressure Regulator 

* Check Fuel Pressure Regulator performance by measuring voltage.

1. Back probe and measure voltage using GDS and connecting channel A (+) voltage probe to High side and channel B (+) voltage prove to Low side.
   Fig 1: Screen Display - Signal Waveform Of FPR At Engine Idle

   Courtesy of KIA MOTORS AMERICA, INC.
   Fig 2: Screen Display - Signal Waveform Of FPR At Approx 2000rpm

   Courtesy of KIA MOTORS AMERICA, INC.

   Channel A: FPR High - Max at Approx 14.2V

   Channel B: FPR Low - Max at Approx 15.3V

   Channel A: FPR High - Max at Approx 14.2V

   Channel B: FPR Low - Max at Approx 15.3V