CUMMINS N14 - Engine Power Output Low - Performance Measurement (Continued)

Engine Power Output Low - Performance Measurement (Continued)
Cause Corrections
----------
Fuel Rate Low, Fuel Pressure OK, Intake
Manifold Pressure High, Ambient Air
Temperature Between 0 and 38°C [32 and
100°F]
OK
f
Check for correct parts for CPL. Refer
to CPL Manual, Bulletin No. 3379133.
----------
Fuel Rate OK, Fuel Pressure OK,
Intake Manifold Pressure Low
OK
f
• Excessive intake air restriction. Refer to
Procedures 3-04 and 3-11.
• Excessive exhaust restriction. Check for
exhaust pipe damage or restriction. Check
for correct muffler part number.
• Check for intake air or exhaust leaks
between the turbocharger and engine.
Refer to Procedures 3-01 and 3-11.
• Check turbocharger wheel clearance. Refer
to Procedure 3-07.
----------
Fuel Rate Low, Fuel Pressure Low,
Intake Manifold Pressure Low
OK
f
Check AFC line and ASA for leaks or
restrictions. Remove PT fuel pump and
check calibration. Refer to PT Fuel Pump
Rebuild and Calibration Manual, Bulletin No.
3379084. Check entire fuel pump calibration.
----------
Engine Brake or Exhaust Brake
Adjustment Incorrect
OK
f
Adjust engine brakes. Refer to Proce-
dure 7-05.
----------
Overhead Adjustments Incorrect
OK
f
* Adjust valves and injectors. Refer to
Procedure 7-04.
(Continued)
* For CELECT™ engines, this is not a probable cause of low power.
Troubleshooting Symptoms Charts SectionT-Troubleshooting
N14Page T-52