Section 5.10 Fuel Pressure Test

Section 5.10
Fuel Pressure Test

Check as follows:‪

  1. Verify that there is ample fuel in the fuel tank. If the tank is low, fill the tank with ultra-low sulfur fuel.
  2. Remove the supply fuel temperature sending unit from the fuel pump.
  3. Attach a calibrated fuel gauge capable of reading 0–551 kPa (0–80 psi) to the fuel pump port. Crank-start the engine and record the fuel pressure gauge reading.
    1. If the pressure is 0–60 kPa (0–10 psi) within 20 seconds of cranking, refer to , “No or Low Fuel Pressure Test.”
    2. If pressure is below 420 kPa (61 psi) with the engine running, refer to , “No or Low Fuel Pressure Test.”
    3. If pressure is above 490 kPa (71 psi) with the engine running, refer to , “High Fuel Pressure Test.”


EPA07 MBE 4000 DDEC VI Troubleshooting Guide - 6SE568
Generated on 10-13-2008

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