Engine Does Not Develop Full Power; Engine Overheating; Excessive Oil Consumption - Isuzu C-240PW-28 Technical Manual

ARMY TM 9-2815-254-24
AIR FORCE TO 38G1-94-2
MALFUNCTION
TEST OR INSPECTION
Step 8.

ENGINE DOES NOT DEVELOP FULL POWER.

Step 1.
Step 2.
Step 3.

ENGINE OVERHEATING.

Step 1.
Step 2.
Step 3.
Step 4.
8.

EXCESSIVE OIL CONSUMPTION.

Step 1.
Step 2.
Step 3.
3-6
Table 3-2. Troubleshooting - Continued
CORRECTIVE ACTION
Check for low engine compression.
a. Perform engine compression check. Refer to paragraph 3-27.7.
b. If engine defective, repair or replace engine.
Check for blocked air intake system.
Remove blockage as found. lf no blockage is found, do step 2.
Check for air in fuel system lines.
Engine overheated.
Refer to Engine Overheating, Malfunction 7. lf not a problem, refer to Malfunction 5.
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.
Check for oil leakage.
a. Inspect engine for oil leaks. lf no leaks, do step 2.
b. Repair or replace defective components.
Check for blocked air intake system.
Remove blockage as found. lf no blockage, do 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.