Improper Injector Calibration Setting (DDEC III Engines Only)
To determine if improper injector calibration setting (DDEC III engines only) is causing rough running or stalling, perform the following:
- Test for improper injector setting; refer to "16.3 Improper Injector Calibration Setting (DDEC III Engines Only)" .
- Compare the calibration code(s) shown on the Diagnostic Data Reader display with the two digit calibration code(s) on the injector(s).
Figure 1. Injector Calibration Code
- If the calibration codes match, refer to "24.6 Low Compression Pressure" .
- If the calibration code on the display is different then the calibration code on the suspect injector for that cylinder, the injector setting must be reset, see Figure "Injector Calibration Code" ; refer to "24.5.1 Improper Injector Setting Repair" .
Improper Injector Setting Repair
Perform the following steps to recalibrate improper injector setting:
- Reset incorrect injector setting; refer to "16.3.1 Improper Injector Setting Repair" .
- Verify injector setting repair; refer to "126.96.36.199 Test the Engine with Corrected Injector Setting" .
Test the Engine with Corrected Injector Setting
Perform the following to determine if the corrected injector setting resolved rough running or stalling:
- 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 the engine down.
- If the engine is running rough or stalling, shut the engine down. Check for low compression pressure; refer to "24.6 Low Compression Pressure" .
|Series 50 Service Manual - 6SE50|
|Generated on 10-13-2008|