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)
(3)
Remove the spark plug by hand.
Figure 5-97. Spark Plug Defects
b.
Check the spark plug visually. Replace it and go to Step 3, if there are:
(1)
Cracks in the insulator.
(2)
Electrodes worn so thin they cannot be regapped.
(3)
Soft, wet, oily deposits covering the insulator and the plug nose.
(4)
Build-up of deposits between insulator and the plug shell.
(5)
Broken insulator or bent electrode.
NOTE
If the spark plug must be replaced, set the gap at 0.025 inches (0.64 mm).
Oil fouling is a sign of internal engine damage.
5-88
