Quantcast Table  3-2.  Troubleshooting  -  Continued MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION Step 8. Check for low engine compression. a. Perform engine compression check. Refer to paragraph 3-27.7. b. If engine defective, repair or replace engine. ENGINE DOES NOT DEVELOP FULL POWER. Step  1. Check for blocked air intake system. Remove blockage as found. lf no blockage is found, do step 2. Step  2. Check for air in fuel system lines. Step  3. Engine  overheated. Refer to Engine Overheating, Malfunction 7. lf not a problem, refer to Malfunction 5. ENGINE  OVERHEATING. Step 1. Step  2. Step  3. Step  4. Inspect coolant level. a. Check engine for coolant leaks. lf engine has no leaks, do step 2. b.  Repair  coolant  leaks. Check for defective thermostat. a. If thermostat is suspected of being defective, replace thermostat. Refer to paragraph 3-6. b. If engine continues to overheat, do step 3. Check for defective water pump. a. Remove and check water pump for damage. If not defective, do step 4. b. Replace defective water pump. Refer to paragraph 3-7. Check improper fuel pump injection timing. Adjust fuel injection pump timing. Refer to paragraph 3-13.2. 8. EXCESSIVE  OIL  CONSUMPTION. Step 1. Check for oil leakage. a. Inspect engine for oil leaks. lf no leaks, do step 2. b. Repair or replace defective components. Step  2. Check for blocked air intake system. Remove blockage as found. lf no blockage, do step 3. Step  3. Check for defective intake or exhaust valve seals or valve guides. a. Repair or replace defective components. Refer to paragraph 3-27.4. b. Disassemble  and  inspect  valve  seals  and  guides.  Refer  to  paragraph  3-27.2.  If  not  defective, replace engine. 3-6

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ARMY TM 9-2815-254-24 AIR FORCE TO 38G1-94-2 Table  3-2.  Troubleshooting  -  Continued MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION Step 8. Check for low engine compression. a. Perform engine compression check. Refer to paragraph 3-27.7. b. If engine defective, repair or replace engine. ENGINE DOES NOT DEVELOP FULL POWER. Step  1. Check for blocked air intake system. Remove blockage as found. lf no blockage is found, do step 2. Step  2. Check for air in fuel system lines. Step  3. Engine  overheated. Refer to Engine Overheating, Malfunction 7. lf not a problem, refer to Malfunction 5. ENGINE  OVERHEATING. Step 1. Step  2. Step  3. Step  4. Inspect coolant level. a. Check engine for coolant leaks. lf engine has no leaks, do step 2. b.  Repair  coolant  leaks. Check for defective thermostat. a. If thermostat is suspected of being defective, replace thermostat. Refer to paragraph 3-6. b. If engine continues to overheat, do step 3. Check for defective water pump. a. Remove and check water pump for damage. If not defective, do step 4. b. Replace defective water pump. Refer to paragraph 3-7. Check improper fuel pump injection timing. Adjust fuel injection pump timing. Refer to paragraph 3-13.2. 8. EXCESSIVE  OIL  CONSUMPTION. Step 1. Check for oil leakage. a. Inspect engine for oil leaks. lf no leaks, do step 2. b. Repair or replace defective components. Step  2. Check for blocked air intake system. Remove blockage as found. lf no blockage, do step 3. Step  3. Check for defective intake or exhaust valve seals or valve guides. a. Repair or replace defective components. Refer to paragraph 3-27.4. b. Disassemble  and  inspect  valve  seals  and  guides.  Refer  to  paragraph  3-27.2.  If  not  defective, replace engine. 3-6


 


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