Electronic fault codes active or high counts of inactive fault codes
View and troubleshoot the fault codes with INSITETM. Refer to the Troubleshooting and Repair
Manual, CM21 00 and CM2150 Electronic Control System, Bulletin 4021570.
Lubricating oil level is below specification
Check the oil level. Verify the dipstick calibration and the oil pan capacity. Fill the system to the
specified level. Refer to Procedures 007-043 and 007-009.
Lubricating oil is thin or diluted
Refer to Procedures 007-048 and 007-083 to check if the lubricating oil is contaminated. If the
lubricating oil is contaminated see the Lubricating Oil Contaminated symptom tree.
Lubricating oil pressure is below specification
Check the oil pressure. Refer to Procedure 007-037. If the pressure is low, refer to the Lubricating Oil Pressure Low symptom tree.
Main bearing capscrews are loose, worn or not tightened correctly
Check the torque on the main bearing capscrews. Inspect the capscrews for wear. Refer to Procedure 001-006.
Main bearings are damaged or worn, or the wrong bearings are installed
Inspect the main bearings for damage, excessive wear, and the correct part number. Refer to Procedure 001-006.
Crankshaft journals are damaged or out of round
Inspect the crankshaft journals. Refer to Procedure 001-016.
Flywheel or flexplate capscrews are loose or broken
Check the flywheel or flexplate and the mounting capscrews. Refer to Procedures 016-004 and
016-005.