- Fuel shutoff solenoid
- Electrical connectors
- Fuel supply
- Rack controls
- Engine speed sensor
- Throttle signal
- Overspeed protection
- Excessive load
Check the fuel shutoff solenoid for proper operation. Refer to Troubleshooting, "Fuel Shutoff - Test" .
Check for correct installation of the J14/P14 ECM connector. Refer to Troubleshooting, "Electrical Connectors - Inspect".
- Visually check the fuel level in the fuel tank. Do not rely on the fuel gauge only. If necessary, add fuel to the fuel tank. If the engine has been run out of fuel, it will be necessary to purge the air from the fuel system. Refer to Operation and Maintenance Manual for the correct procedure.
- Check the fuel lines for the following problems: restrictions, collapsed lines and pinched lines. If problems are found with the fuel lines, repair the lines and/or replace the lines.
- Check the fuel tank for debris or foreign objects which may block the fuel supply.
- Prime the fuel system if any of the following procedures have been performed:
- Replacement of the fuel filters
- Service on the low pressure fuel supply circuit
Note: Check the fuel system for air. Refer to Systems Operation/Testing and Adjusting for information that is related to checking the fuel system for air.
- Replacement of the fuel filters
- Check fuel quality. Cold weather adversely affects the characteristics of the fuel. Refer to the engine's Operation and Maintenance Manual for information on improving the characteristics of the fuel during cold weather operation.
- Check the filtered fuel pressure while the engine is being cranked. Refer to Systems Operation/Testing and Adjusting for the test procedure and for the correct pressure values.
If the fuel pressure is low, replace the fuel filters. Clean the primary filter/water separator of debris. Refer to the Operation and Maintenance Manual for details.
If the fuel pressure is still low, check the operation of the fuel pressure regulating valve. Also, check for the proper operation of the fuel transfer pump. Refer to Systems Operation/Testing and Adjusting for test information.
Check the rack solenoid for proper operation. Refer to Troubleshooting, "Fuel Rack Solenoid - Test" for troubleshooting procedures. Refer to Troubleshooting, "Fuel Control - Test" in order to troubleshoot the Dynamic Rack Controls. Also, refer to Troubleshooting, "Sensor Signal (Analog, Active) - Test" for procedures to troubleshoot the rack position sensor.
Make sure that the engine speed sensor is installed correctly. Refer to Troubleshooting, "Engine Speed - Test".
Make sure that the timing wheel is correctly installed.
Monitor the status for "Throttle Position" on Cat ET. Verify that the status for "Throttle Position" is stable and that the engine is able to reach high idle speed. If a problem is suspected with the throttle, refer to the appropriate troubleshooting procedure for troubleshooting the throttle signal.
Make sure that the engine speed switch is operating correctly. Refer to Troubleshooting, "Overspeed - Calibrate" for the troubleshooting procedures.
Make sure that the load is not excessive. Reduce the load. If necessary, disengage the driven equipment and test the engine.