Attention: TDR Forum Junkies Engine Runs Rough or Misfires
This is symptom tree T062.
CAUSE CORRECTION
Engine is cold ® Allow the engine to warm to operating temperature. If the engine will not reach operating temperature, refer to the Coolant Temperature Below Normal symptom tree in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Electronic fault codes active or highcounts of inactive fault codes ® Refer to Section TF for fault code troubleshooting.
OK
¯
Electronic Control Module (ECM) isnot calibrated or has incorrectcalibration ® Compare the calibration stored in the ECM with the engine rating and the Control Parts List (CPL), Bulletin No. 3379133. If necessary, calibrate the ECM. Refer to the appropriate electronic service tool manual and Procedure 019-032.
OK
¯
Fuel filter is plugged ® Measure the fuel pressure before and after the fuel filter. Refer to Procedure 005-011 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Air in the fuel system ® Check for air in the fuel system. Refer to Procedure 006-003 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel inlet restriction ® Check for fuel inlet restriction. Refer to Procedure 006-020 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel lift pump is malfunctioning ® Check the fuel lift pump for correct operation. Check the pump output pressure. Replace the fuel lift pump if necessary. Refer to Procedure 005-045 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel pump overflow valve ismalfunctioning ® Check or replace the return overflow valve. Refer to Procedure 006-044.
OK
¯
Fuel drain line is restricted ® Check the fuel drain lines for restriction. Clear or replace the fuel lines, check valves, or tank vents as necessary. Refer to Procedure 006-012 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Injector is malfunctioning ® Perform the cylinder performance test. Replace injectors as necessary. Refer to Procedure 006-026 or 014-008 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel connector is leaking fuel ® Perform the Automated Cylinder Performance Test to isolate the cylinder with the leaking fuel connector. Inspect the fuel connector and injector for nicks or damage that may cause fuel leaks. Refer to Procedure 006-026 or 014-008 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel supply line restriction betweenthe fuel pump and the injectors ® Check the fuel supply line from the fuel pump to the cylinder head for sharp bends which can cause restrictions.
OK
¯
Engine mounts are worn, damaged, ornot correct ® Visually check the engine mounts. Refer to the OEM service manual and Procedure 016-003.
OK
¯
Moisture in the wiring harnessconnectors ® Dry the connectors with Cummins electronic cleaner, Part No. 3824510.
OK
¯
Engine speed sensor (ESS) or circuitis malfunctioning ® Check the ESS for correct adjustment and for debris on the sensor. Check the ESS circuit. Refer to Procedures 019-042 and 019-106.
OK
¯
Fuel grade is not correct for theapplication or the fuel quality is poor ® Operate the engine from a tank of good fuel. Refer to Fuel Recommendations and Specifications in the Operation and Maintenance Manual, Bulletin No. 3666170.
OK
¯
Injectors are not correct ® Remove the injectors and compare the part numbers to the Control Parts List (CPL), Bulletin No. 3379133. Replace the injectors if necessary. Refer to Procedure 006-026 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Injector shim thickness is not correct ® Remove the injectors and verify the injector shim thickness. Refer to Procedure 006-026 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Static injection timing is not correct ® Check the static injection timing. Refer to Procedure 005-037 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel injection pump is malfunctioning ® Replace the fuel injection pump. Refer to Procedure 005-014 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Internal engine damage ® Analyze the oil and inspect the filters to locate an area of probable damage. Refer to Procedure 007-002 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
this might help some
This is symptom tree T062.
CAUSE CORRECTION
Engine is cold ® Allow the engine to warm to operating temperature. If the engine will not reach operating temperature, refer to the Coolant Temperature Below Normal symptom tree in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Electronic fault codes active or highcounts of inactive fault codes ® Refer to Section TF for fault code troubleshooting.
OK
¯
Electronic Control Module (ECM) isnot calibrated or has incorrectcalibration ® Compare the calibration stored in the ECM with the engine rating and the Control Parts List (CPL), Bulletin No. 3379133. If necessary, calibrate the ECM. Refer to the appropriate electronic service tool manual and Procedure 019-032.
OK
¯
Fuel filter is plugged ® Measure the fuel pressure before and after the fuel filter. Refer to Procedure 005-011 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Air in the fuel system ® Check for air in the fuel system. Refer to Procedure 006-003 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel inlet restriction ® Check for fuel inlet restriction. Refer to Procedure 006-020 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel lift pump is malfunctioning ® Check the fuel lift pump for correct operation. Check the pump output pressure. Replace the fuel lift pump if necessary. Refer to Procedure 005-045 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel pump overflow valve ismalfunctioning ® Check or replace the return overflow valve. Refer to Procedure 006-044.
OK
¯
Fuel drain line is restricted ® Check the fuel drain lines for restriction. Clear or replace the fuel lines, check valves, or tank vents as necessary. Refer to Procedure 006-012 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Injector is malfunctioning ® Perform the cylinder performance test. Replace injectors as necessary. Refer to Procedure 006-026 or 014-008 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel connector is leaking fuel ® Perform the Automated Cylinder Performance Test to isolate the cylinder with the leaking fuel connector. Inspect the fuel connector and injector for nicks or damage that may cause fuel leaks. Refer to Procedure 006-026 or 014-008 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel supply line restriction betweenthe fuel pump and the injectors ® Check the fuel supply line from the fuel pump to the cylinder head for sharp bends which can cause restrictions.
OK
¯
Engine mounts are worn, damaged, ornot correct ® Visually check the engine mounts. Refer to the OEM service manual and Procedure 016-003.
OK
¯
Moisture in the wiring harnessconnectors ® Dry the connectors with Cummins electronic cleaner, Part No. 3824510.
OK
¯
Engine speed sensor (ESS) or circuitis malfunctioning ® Check the ESS for correct adjustment and for debris on the sensor. Check the ESS circuit. Refer to Procedures 019-042 and 019-106.
OK
¯
Fuel grade is not correct for theapplication or the fuel quality is poor ® Operate the engine from a tank of good fuel. Refer to Fuel Recommendations and Specifications in the Operation and Maintenance Manual, Bulletin No. 3666170.
OK
¯
Injectors are not correct ® Remove the injectors and compare the part numbers to the Control Parts List (CPL), Bulletin No. 3379133. Replace the injectors if necessary. Refer to Procedure 006-026 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Injector shim thickness is not correct ® Remove the injectors and verify the injector shim thickness. Refer to Procedure 006-026 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Static injection timing is not correct ® Check the static injection timing. Refer to Procedure 005-037 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Fuel injection pump is malfunctioning ® Replace the fuel injection pump. Refer to Procedure 005-014 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
OK
¯
Internal engine damage ® Analyze the oil and inspect the filters to locate an area of probable damage. Refer to Procedure 007-002 in the Troubleshooting and Repair Manual, ISB Engines, Bulletin No. 3666193.
this might help some
