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 TM 55-1905-223-24-3
Table 2-2. Troubleshooting-Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
STEP 5.
Check if engine is running on fumes drawn into air intake.
Locate and isolate the source of fumes.
STEP 6.
Check if injector check balls are not seating or missing.
Replace injector (para. 2-40).
27. Poor deceleration.
STEP 1.
Governor actuator not operating properly.
Replace governor actuator (para. 2-37).
STEP 2.
Check if fuel return lines are restricted.
Check for loops, restricted fittings.
STEP 3.
Check for excessive fuel leakage at throttle.
Replace fuel pump (para. 2-37).
STEP 4.
Check throttle linkage adjustment.
Correct adjustment.
STEP 5.
Check if injector check ball is not seating or missing.
Replace injector(s), (para. 2-40).
28.
Engine surges at high idle.
STEP 1.
Check for air leak in fuel lines or in fuel pump.
Check for air in fuel, tighten fuel connections, tighten filter. Replace pump as required (para. 2-37).
29. Engine will not crank or cranks slowly.
STEP 1.
Check if starter connections are broken, loose, or corroded (on electric starter motor).
Check starter connection. Clean, tighten or replace wiring as required (para. 2-25).
STEP 2.
Check if starting current is low (for electric starter motor) on remote battery supply.
Check electrolyte level and specific gravity. (Refer to TM 55-1905-223-24-18.)
STEP 3.
Check if starting circuit component is malfunctioning (electric or air starter).
Check starting circuit components (paras. 2-24 (air) and 2-25 (electric) ) Replace starter motor as required.
2-45
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