TM 5-4320-300-14
Table 5-1. Direct Support Troubleshooting-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ENGINE STARTS BUT RUNS UNEVENLY, STALLS, OR SURGES
Step 1. Check for binding governor to injector operating linkage. Start engine. Watch the moving governor
to injector operating linkage components while increasing and decreasing engine speed with the
throttle control.
If components bind, adjust the governor linkages (para 5-15).
Step 2. Check for mistimed injectors.
Time injectors (para 5-12).
Step 3. Check for faulty injectors. Remove and test injectors (para 5-12).
Repair or replace faulty injectors (para 5-12).
Step 4. Check for malfunctioning mechanical governor.
Service or replace governor (para 5-15).
4. ENGINE STOPS RUNNING OR PRODUCES BLACK, WHITE, OR GREY SMOKE
Step 1. Check for faulty injectors. Remove and test injectors (para 5-12).
Repair or replace faulty injectors (para 5-12).
Step 2. Check for cracked suction line in
fuel tank. Loosen hose clamp and
remove fuel supply hose from fuel
control valve at fitting. Remove
fuel control valve with suction line
from fuel tank. Inspect suction
line.
If line is cracked, bent, clogged, or
damaged, replace it (para 5-10).
5-3
