16.1 MECHANICAL TROUBLESHOOTING (Rev. 2007) All information subject to change without notice. 16-6 From Bulletin 1–MBE 4000–07 6SE412 0702 Copyright © 2007 DETROIT DIESEL CORPORATION Problem—The Engine Performs Poorly, Does Not Develop Full Power Cause Remedy The air filter and/or intake air system is clogged. Check the air restriction indicator. Clean the intake air system and replace the air filter if necessary. The exhaust brake valve is malfunctioning. Have an authorized dealer check the operation of the valve. The fuel filter is clogged. Replace the filter element. There are other problems with the fuel system. Bring the vehicle to an authorized dealer for service.
The valves are not adjusted properly Check the valve lash. See The coolant temperature sensor is damaged or reading incorrectly. Bring the vehicle to an authorized dealer for service. The fuel temperature sensor is damaged or reading incorrectly. Bring the vehicle to an authorized dealer for service. The engine oil temperature sensor is damaged or reading incorrectly. Bring the vehicle to an authorized dealer for service. The charge-air temperature sensor is damaged or reading incorrectly. Bring the vehicle to an authorized dealer for service. There are problems with the PLD or VCU control unit. Bring the vehicle to an authorized dealer for service. There is internal damage to the engine.
Bring the vehicle to an authorized dealer for service. Problem—The Engine Performs Poorly, Does Not Develop Full Power Cause Remedy The air filter and/or intake air system is clogged. Check the air restriction indicator. Clean the intake air system and replace the air filter if necessary. The exhaust brake valve is malfunctioning. Have an authorized dealer check the operation of the valve. The fuel filter is clogged. Replace the filter element. There are other problems with the fuel system. Bring the vehicle to an authorized dealer for service. The valves are not adjusted properly Check the valve lash. See The coolant temperature sensor is damaged or reading incorrectly.
Bring the vehicle to an authorized dealer for service. The fuel temperature sensor is damaged or reading incorrectly. Bring the vehicle to an authorized dealer for service. The engine oil temperature sensor is damaged or reading incorrectly. Bring the vehicle to an authorized dealer for service. The charge-air temperature sensor is damaged or reading incorrectly. Bring the vehicle to an authorized dealer for service. There are problems with the PLD or VCU control unit. Bring the vehicle to an authorized dealer for service. There is internal damage to the engine. Bring the vehicle to an authorized dealer for service.