HARNESS AS-ENGINE 3214323 - Caterpillar

Basic Engine Troubleshooting
Introduction
Troubleshooting can be difficult. The Troubleshooting Index gives a list of possible problems. To make a repair to a problem, see the possible cause and corrective action on the pages that follow. Some corrective action procedures direct you to follow PEEC III Engine Test Procedure P- or PEEC III Engine Diagnostic Code, These procedures are in Troubleshooting 3406B (PEEC III) Truck Engine Test Procedures, Form No. SENR5147.This list of problems, causes and corrections will only give an indication of where a possible problem can be, and what repairs are needed. Normally, more or other repair work is needed beyond the recommendations in the list.Service personnel may remember similar complaints which were corrected by a previous method of troubleshooting. However, just because the complaint is the same the cause for the complaint can be different.Be sure to get a good description of the problem from the operator and/or the person who owns the vehicle. What they tell you about the problem can save you time and make the repair job faster and easier.Troubleshooting Problem List
1. Loud combustion Noise2. Fuel Consumption Too High3. Too Much Black Or Gray Smoke4. Too Much White Or Blue Smoke5. Engine Has Low Oil Pressure6. Engine Overheating7. Engine Over Cooling8. Coolant Leaks Outside of Engine9. Coolant Leaks at the Overflow Tube10. Coolant Leakage Inside Engine11. Fuel in Crankcase Oil For PEEC III System Troubleshooting, see Troubleshooting 3406B (PEEC III) Truck Engine Test Procedures, Form No. SENR5147.Troubleshooting Problems
Problem 1: Loud Combustion Noise
Probable Cause:1. Bad quality or water in fuel Follow the recommendations given in Special Instruction, Form No. SEHS7067, Fuel Recommendations For Caterpillar Diesel Engines.