TM 9-4940-568-20
2-59
Table 2-7. Engine Troubleshooting (CONT).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10. ENGINE STARTS BUT WILL NOT KEEP RUNNING.
Low fuel level.
Check/fill fuel tank (TM 9-4940-568-10).
Intake air or exhaust system restricted.
Visually check for exhaust restriction and inspect the air intake (TM 9-4940-568-10).
Air in the fuel system or the fuel supply is inadequate.
Check fuel flow/bleed fuel system (TM 9-4940-568-10).
Fuel waxing due to extremely cold weather.
Verify by inspecting the fuel filter. Clean the system and use climatized fuel.
Fuel contaminated.
Verify by operating the engine with clean fuel from a temporary supply tank. Drain and
flush the fuel supply tank.
Plugged fuel filters.
Check/replace filters (Para 8-18 and 8-19).
11. ENGINE SURGING (SPEED CHANGE)
Fuel level low.
Check/fill fuel tank (TM 9-4940-568-10).
High pressure fuel leak.
Inspect/correct leaks in the high pressure lines and fittings (Para 8-20).
Aerated fuel.
Bleed the fuel system and correct source of the leak (TM 9-4940-568-10).
