TM 5-3740-214-14
Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE STOPS SUDDENLY (Continued)
Figure 5-98. Spark Plug Gap
c.
Check the spark plug gap.
(1)
Reset the gap at 0.025 inches (0.64 mm) if necessary and go to Step 3d.
(2)
If the gap is ok, go to Step 3d.
d.
Check the spark plug for a spark.
(1)
Connect the spark plug wire to the spark plug and set the plug on a grounded engine part.
(2)
Turn the ignition switch ON.
(3)
Crank the engine by hand. When the points open and close, a spark will jump between the spark
plug electrodes.
(4)
If there is a bright blue spark, go to Step 4.
(5)
If there is no spark or the spark is weak and yellow, go to Step 4.
e.
Crank the engine over. As the points open and close,
(1)
If the engine starts, the problem is solved.
(2)
If the engine does not start, go to Step 4.
Step 4.
Check the spark plug wire.
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