TROUBLESHOOTING 54 All information subject to change without notice. (Rev. 04/08) DDC-SVC-MAN-0055 04/08 Copyright © 2008 DETROIT DIESEL CORPORATION Problem—The Engine Exhaust Is Blue Cause Remedy The engine oil level is too high (engine oil is reaching the combustion chamber). Adjust the oil level, and then have the oil level checked by an authorized dealer. The turbocharger is leaking oil. Have an authorized dealer replace the turbocharger The valve stem seals are loose or damaged. Have an authorized dealer replace the seals. The piston rings are worn. Have an authorized dealer replace the piston rings.
Problem—Engine Brake Performance Is Poor Cause Remedy The engine brake control switch is damaged. Replace the switch The exhaust brake is not operating properly. Have an authorized dealer check the operation of the valve. The constant-throttle valves are malfunctioning. Bring the vehicle to an authorized dealer for service. Components of the DDEC-ECU and/or DDEC-VCU are damaged. Bring the vehicle to an authorized dealer for service. Problem—Cruise Control Is Not Working Cause Remedy One or more of the cruise control switches are damaged. Replace the damaged switch. Components of the DDEC-ECU and/or DDEC-VCU are damaged or not working properly.
Bring the vehicle to an authorized dealer for service.