CONE-BEARING 5D6297 - Caterpillar

Note: Some white smoke may be present during cold start-up conditions when the engine is operating normally. If the white smoke persists, there may be a problem.Probable Causes
Starting aids (if applicable)
Coolant temperature sensor
Water temperature regulators
Engine speed/timing sensor
Unit injectors
Flash file
Fuel supply
Component wear
Cooling system
TurbochargerRecommended Actions
Starting Aids (if applicable)
If equipped, check for proper operation of installed starting aids.
Ensure that the ether canister is not empty and/or low. Replace the ether canister if the ether canister is empty and/or low.
Actuate the system manually after start-up and observe results. The ether system will not operate if the coolant temperature is too high. Refer to the diagnostic functional test Troubleshooting, "Ether Injection System".Coolant Temperature Sensor
Use the Caterpillar Electronic Technician (ET) to verify that the engine has exited cold mode.
Compare the coolant temperature from Cat ET to the coolant temperature that is obtained from the 6V-9130 Temperature Adapter (MULTIMETER).Water Temperature Regulators
Check the water temperature regulators for correct operation. Verify that the engine reaches full operating temperature. If the engine does not reach full operating temperature, a water temperature regulator may be stuck open. Remove the water temperature regulator and inspect the water temperature regulator. If necessary, repair the water temperature regulator and/or replace the coolant temperature regulator. Refer to the Systems Operation/Testing and Adjusting manual for the proper procedure.Engine Speed/Timing
Check the calibration of the engine speed/timing sensor. Refer to Troubleshooting, "Engine Speed/Timing Sensor - Calibrate".Unit Injectors
Perform the "Cylinder Cutout Test" on Cat ET in order to try to isolate any injectors that might be misfiring. Refer to Troubleshooting, "Injector Solenoids".Flash File
Verify that the correct flash file is installed.Fuel Supply
Check the fuel quality. Low cetane fuel can create white smoke. If necessary, replace the fuel with a higher cetane fuel. Cold weather adversely affects the characteristics of the fuel. Refer to the Operation and Maintenance Manual for information on improving the characteristics of the fuel during cold-weather operation.Check the fuel level in the fuel tank. Ensure that adequate fuel is available for the application.Component Wear
Check the engine for the following problems: Excessive valve wear, piston wear, ring wear, liner wear and reduced compression pressure.Cooling System
Check for proper operation of the jacket water heater. Repair the jacket water heater or replace the jacket water heater. Check for an internal coolant leak into the cylinder and/or the exhaust. Refer to the Systems Operation/Testing and Adjusting manual for more information.Turbocharger Oil Leak
Inspect the turbocharger for failure of turbocharger oil seal. Remove the exhaust outlet piping from the turbocharger. Visually inspect the piping for the presence of oil. Refer to Operation and Maintenance Manual, "Turbocharger-Inspect".