RENR5042-02 49 Troubleshooting Section Inspect the engine oil filters for nonferrous material. Flaking of nonferrous material could indicate worn gear train bearings. Unit Injectors 1. Check for correct installation of the J1/P1 and J2/P2 Electronic Control Module (ECM) connectors and the J300/P300 unit injector connectors. Refer to Troubleshooting, “Electrical Connectors - Inspect”. Crankshaft Inspect the crankshaft and the related components. Inspect the connecting rod bearings and the bearing surfaces on the crankshaft. Make sure that the bearings are in the correct position. 2.
Perform the “Injector Solenoid Test” on Cat ET in order to determine if all of the injector solenoids are being energized by the ECM. Look for worn thrust plates and wear on the crankshaft. 3. Perform the “Cylinder Cutout Test” on Cat ET in order to identify any injectors that might be misfiring. Refer to Troubleshooting, “Injector Solenoid Circuit - Test” for additional information. Check the counterweight bolts. Piston Valve Lash Make sure that the piston pin is correctly installed. Inspect the condition of the pistons according to Guidelines for Reusable Parts and Salvage Operations. Refer to Troubleshooting, “Excessive Valve Lash”.
i02290312 Poor Acceleration or Response i02257027 Noise Coming from Cylinder SMCS Code: 1000-035 Probable Causes SMCS Code: 1000-035 Probable Causes Engine “Derated” Diagnostic codes Cold mode operation Fuel quality Flash file Throttle position sensor Unit injectors Electrical connectors Valve lash Unit injectors Recommended Actions Fuel Position, Rated Fuel Limit, and FRC Fuel Position Diagnostic Codes Check for active diagnostic codes on the Caterpillar Electronic Technician (ET). Troubleshoot any active codes before continuing with this procedure.
Air inlet and exhaust system Fuel supply Recommended Actions Fuel Quality Engine “Derated” Refer to Operation and Maintenance Manual for information on improving the characteristics of the fuel during cold weather operation. The engine may be derated due to dirty air filters or other factors. Use the Caterpillar Electronic Technician (ET) in order to check for engine derates.