TM 5-3740-214-14
ELECTRICAL PARTS GROUP (Continued)
Figure 5-227. Spark Plug Gap
Figure 5-228. Spark Plug Defects
(d) Check spark plug for the following:
Correct gap
Worn electrodes
Cracked insulator
Build-up of deposits
Oil fouling
(e) Check coil terminals for corrosion and dirt.
(f) Replace any damaged or worn parts.
Figure 5-229. Ignition Wire Test
5-212