Check as follows:
| ENGINE EXHAUST |
| To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic. |
- Connect to DDDL 7.0 (the latest version).
- Start and run the engine.
- Check for a code that indicates high coolant temperature that could be a cause of high fuel temperature.
- If there is a code for high coolant temperature, refer to “11.1 Improper Engine Coolant Level” .
- If there is not a code for high coolant temperature, go to the next step.
- Run the engine at idle with a no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range, 88-96°C (190-210°F).
- If the return fuel temperature is less than or equal to 60°C (140°F), check for improper injector calibration setting; refer to “9.4 Improper Injector Calibration Setting” .
- If the return fuel temperature is greater than 60°C (140°F), remove and replace the fuel filter; refer to the EPA07 DD15 Workshop Manual (DDC-SVC-MAN-0002), fuel system chapter.
- Start and run the engine.
- Run the engine through its operating range with no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range, 88-96°C (190-210°F).
- If the engine is not running rough or stalling, no further troubleshooting is required. Shut down the engine.
- If the engine is running rough or stalling, shut down the engine. Check for improper injector calibration setting; refer to “9.4 Improper Injector Calibration Setting” .
