TM 9-2320-273-20
Table 4-1. Engine and Engine Systems Troubleshooting (Continued).
MALFUNCTION.
TEST OR INSPECTION.
CORRECTIVE ACTION.
8. GRADUAL LOSS OF POWER, NO SMOKE:
Step 1.
Check for leaking fuel lines.
Tighten connections or replace fuel lines as required (para 4-20).
Step 2.
Check for air intake restriction.
Service air intake as necessary (para 4-25).
Step 3.
Check for worn accelerator rod linkage.
Adjust and replace worn parts (para 4-21).
Step 4.
Check for congealed fuel (cold weather).
Check fuel specification (refer to TM 9-2320-273-10).
9. SLOW DECELERATION, ENGINE “FLOATS”:
Check for air leaks in fuel pump supply lines.
Service supply lines as necessary (para 4-20).
10. ERRATIC IDLE SPEED:
Check for air leaks in fuel pump supply lines.
Service supply lines as necessary (para 4-20).
11. EXCESSIVE EXHAUST SMOKE DURING ACCELERATION:
Step 1.
Check for dirty fuel filter.
Service fuel filter (para 4-18).
Step 2.
Check for air crossover tube leaks (para 4-28).
a.
Repair air crossover tube leaks (para 4-28).
b.
Refer to Direct Support Maintenance.
12. EXCESSIVE EXHAUST SMOKE THROUGHOUT SPEED RANGE:
Step 1.
Check for dirty air cleaner element.
Clean or replace element (para 4-24).
Step 2.
Check for poor quality fuel.
a.
Check fuel specification. (Refer to TM 9-2320-273-10).
b.
Refer to Direct Support Maintenance.
13. HIGH FUEL CONSUMPTION:
Step 1.
Check for poor quality fuel.
a.
Check fuel specification trefer to TM 9-2320-273-10).
b.
Notify Direct Support Maintenance.
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