ARMY TM 9-2815-255-24 AIR FORCE TO 38G1-95-2 MARINE CORPS TM 2815-24/4 TABLE 3-2.  Troubleshooting Continued MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 3.  Check for defective water pump. a. Remove and check water pump for damage, refer to paragraphs 3-10.1.  and 3-10.2.  If not defective, do step 4. b. Replace defective water pump.  Refer to paragraph 3-10. Step 4.  Check improper fuel injection pump timing. Adjust fuel injection pump timing.  Refer to paragraph 3-28. 8.  EXECESSIVE OIL CONSUMPTION. Step 1.  Check for oil leakage. a. Inspect engine for oil leaks.  If no leaks, do step 2. b. Repair or replace defective components. Step 2.  Check for blocked air intake system. Remove blockage as found.  If not 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 3-34. b. Disassemble and inspect valve seals and guides.  Refer to paragraphs 3-34.3. and 3-34.4.  If not defective, replace engine. 9.  LOW OIL PRESSURE Step 1.  Check for improper grade of oil. a. Refer to end item Lubrication Order.  If proper grade of oil, do step 2. b. If improper grade of oil, refer to paragraph 3-16.  and change oil and filter. 3-7