TM 5-3825-229-14&P
Table 3-1. Operator Troubleshooting Table (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE (cont)
27.
ENGINE RUNS UNEVENLY AND VIBRATES EXCESSIVELY
Step 1.
Inspect air filter.
a.
Check the air filter indicator on the engine intake manifold. If it shows red, the air
cleaner element is dirty. Clean or replace element (para. 3-7).
b.
If air filter is clean, go to Step 2.
Step 2.
Fuel may be contaminated.
a.
If fuel is found to be contaminated, have Organizational Maintenance install new
fuel filter.
b.
Drain fuel from tank and add fuel known to be clean.
c.
If engine still runs unevenly and vibrates excessively, notify Organizational Maintenance.
28.
ENGINE EMITS BLACK SMOKE FROM THE EXHAUST
Step 1.
Inspect air filter.
a.
Check the air filter indicator on the engine intake manifold. If it shows red, the air
cleaner element is dirty. Clean or replace element (para. 3-7).
b.
If air filter is clean, go to Step 2.
Step 2.
Fuel may be contaminated.
a.
If fuel is found to be contaminated, have Organizational Maintenance install new fuel
filter.
b.
Drain fuel from tank and add fuel known to be clean.
c.
If engine still emits black smoke from the exhaust, notify Organizational Maintenance.
29.
ENGINE EMITS BLUISH-WHITE SMOKE FROM EXHAUST
Notify Organizational Maintenance.
30.
ENGINE DETONATES OR KNOCKS
Notify Organizational Maintenance.
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