TM 5-3810-300-24&P-3
15.2 Trouble Shooting (Engine)
SUGGESTED REMEDY
1
High exhaust back pressure or a restricted air inlet
Replace faulty injectors if this condition still persists after
causes insufficient air for combustion and will result in
timing the injectors and performing the engine tune-up.
incompletely burned fuel.
Avoid lugging the engine as this will cause incomplete
High exhaust back pressure is caused by faulty exhaust
combustion. Operate the engine as outlined in the
piping or muffler obstruction and is measured at the
Drivers Handbook.
exhaust manifold outlet with a manometer. Replace
faulty parts.
3
Check for use of an improper grade of fuel. Refer
to Fuel Oil Specifications in Section 13.3.
Restricted air inlet to the engine cylinders is caused by
clogged cylinder liner ports, air cleaner or blower air inlet
4
Check for internal lubricating oil leaks and refer to
screen. Clean these items. Check the emergency stop
the High Lubricating Oil Consumption chart.
to make sure that it is completely open and readjust it if
necessary.
5
Check for faulty injectors and replace as necessary.
2
Check for improperly timed injectors and improperly
Check for low compression and consult the Hard Starting
positioned injector rack control levers. Time the fuel
chart.
injectors and perform the appropriate governor tune-up.
The use of low cetane fuel will cause this condition.
Refer to Fuel Oil Specifications in Section 13.3.
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