TM 10-3930-659-20 Table 4-1.  Mechanical Troubleshooting (Con't). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 2. Check fuel injection pump static timing (see paragraph 5-26). Adjust fuel injection pump static timing (see paragraph 5-26). If engine still emits excessive exhaust smoke, notify Direct Support Maintenance. 5. ENGINE EMITS EXCESSIVE BLUE OR WHITE EXHAUST SMOKE. WARNING Servicing of engine cooling system should only be performed on a cool engine. NEVER  remove  clamps  or  hoses  when  engine  Is  hot.    Pressurized  steam,  hot water, or coolant will cause serious burns. Step 1. Inspect for faulty engine thermostats. Remove engine thermostats (see paragraph 5-34) and check for an open valve (see TM 750-254).  If valve is opened, replace engine thermostats (see paragraph 5-34). Step 2. Check fuel injection pump static timing (see paragraph 5-26). Adjust fuel injection pump static timing (see paragraph 5-26). If engine still emits excessive exhaust smoke, notify Direct Support Maintenance. 6. ENGINE NOISE IS ABNORMAL. Step 1. Inspect for low engine oil (see TM 10-3930-659-10) or incorrect engine oil (see LO 10-3930- 659-12). Add or change engine oil (see TM 10-3930-659-10 and LO 10-3930-659-12). Step 2. Check engine oil for contamination. If engine oil is contaminated, notify Direct Support Maintenance. Step 3. Perform engine oil pressure tests (see STE/ICE-R Tests GO08 and GO09). Step 4. Inspect cylinder head valve for proper clearance (see paragraph 5-1). Adjust cylinder head valves (see paragraph 5-1). Step 5. Check fuel injection pump static timing (see paragraph 5-26). Adjust fuel injection pump static timing (see paragraph 5-26). If engine is still noisy, notify Direct Support Maintenance. 7. ENGINE OIL PRESSURE IS LOW. WARNING Diesel  fuel  Is  combustible.    DO  NOT  smoke  or  allow  open  flame  near  fuel  tank. Failure to follow this warning will result In death or serious Injury to personnel.  If you are burned, Immediately seek medical aid. Step 1. Check for engine oil diluted with fuel. If engine oil is diluted with fuel, notify Direct Support Maintenance. 4-12