Table 2-1. Engine Troubleshooting - Continued.
TEST OR INSPECTION
LOW POWER OUTPUT, EXCESSIVE FUEL CONSUMPTION/BLACK EXHAUST, OR MISFIRING.
Refer to MALFUNCTION 1. ENGINE FAILS TO START OR FAILS TO START EASILY.
BLUE OR WHITE EXHAUST.
Perform steps I to 4 of MALFUNCTION 1. ENGINE FAILS TO START OR FAILS TO START EASILY.
Check for broken/worn, or sticking piston rings by performing a compression test on engine.
If compression in one or more cylinders is less than 275 psi (1896 kPa), replace or repair
damaged components as necessary. Refer to paragraph 2.17.
Remove and inspect intake and exhaust valves, push rods, springs, and guides. Refer to
Replace or repair intake/exhaust valves and valve seat inserts showing signs of pitting.
Replace push rods, springs, and guides as necessary. Refer to paragraph 2.17.
LOW OIL PRESSURE.
Coolant mixed with oil produces a milky discoloration or a brown sludge and will cause low oil pressure.
Open front top left access door per TM 5-3895-373-10. Remove dipstick and check if oil has a
milky discoloration or has become a brown sludge. The following list contains possible causes of
contamination. Check each possible cause using the method described. Repair or replace
damaged components as necessary.
If oil is contaminated with coolant, go to step 2.
If oil is not contaminated with coolant, go to step 6.