END-WIRE 2440452 - Caterpillar

Note: Some white smoke may be present during cold start-up conditions when the engine is operating normally. If the white smoke persists after warm-up, there may be a problem.Probable Causes
Diagnostic codes
Air inlet heater
Water temperature regulators
Unit injectors
Flash file
Fuel supply
Cooling system
Component wearRecommended Actions
Diagnostic Codes
Check for active diagnostic codes on the Caterpillar Electronic Technician (ET). Troubleshoot any active codes before continuing with this procedure.Air Inlet Heater
Ensure that the air inlet heater is functioning properly. For additional information, refer to Troubleshooting, "Air Inlet Heater Circuit - Test".Water Temperature Regulators
Check the water temperature regulators for correct operation.Unit Injectors
Use Cat ET to perform the cylinder cutout test. Try to simulate the conditions for the test that were experienced during operation. Cut out each cylinder individually for approximately one minute in order to isolate any misfiring cylinders. If the misfire can be isolated to a specific cylinder, proceed to Troubleshooting, "Injector Solenoid Circuit - Test".Flash File
Verify that the correct flash file is installed. The flash file that is installed in the ECM will be displayed on the "Configuration" screen on Cat ET.Fuel Supply
Monitor the exhaust for smoke while the engine is being cranked.If no smoke is present, there may be a problem with the fuel quality or there may be a problem with the fuel supply.
Check the fuel quality. Make sure that the fuel meets the requirements of Special Publication, SEBU6251, "Commercial Diesel Engine Fluids Recommendations ".
Check the fuel pressure.
Ensure that the fuel system has been primed.
Check for fuel supply lines that are restricted.
If the temperature is below 0 °C (32 °F), check for solidified fuel (wax).
Check for air in the fuel system.Cooling System
Check for an internal coolant leak. Check for coolant in the engine oil, coolant in the cylinders, and coolant in the exhaust system.Component Wear
Check the following components for excessive wear:
Valves
Pistons
Rings
Cylinder liners