TM 9-4940-549-14&P
Table 4-2. Troubleshooting-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Check for damaged fuel nozzle assembly.
Step 4.
If fuel nozzle assembly is damaged, replace assembly (para. 8-7).
If fuel nozzles are not damaged, check for damaged or clogged fuel
lines.
Engine Misses or Runs Erratically.
3.
Step 1.
Check for restricted or damaged exhaust system.
If exhaust system is damaged or restricted, replace damaged exhaust
or clear restriction.
If exhaust is not restricted or damaged, proceed to step 2.
Step 2.
Check for damaged fuel nozzle assembly.
If fuel nozzle assembly is damaged, replace fuel nozzle assembly
If fuel nozzle assembly is not damaged, proceed to step 3.
Check for damaged fuel pump.
Step 3.
If fuel pump is not damaged, proceed to step 4.
Step 4.
If head gasket is damaged, replace head gasket.
If head gasket is not damaged, proceed to step 5.
Step 5.
Check for damaged valves or pistons.
If valves or pistons are damaged, replace damaged parts (paras.
If valves or pistons are not damaged, check for damaged head or
other engine parts.
4.
Engine Lacks Power.
Check for damaged fuel nozzle assembly.
Step 1.
If fuel nozzle assembly is damaged, replace fuel nozzle assembly
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