Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
TEST OR INSPECTION
ENGINE OPERATES ERRATICALLY (Continued)
Figure 5-147. Spark Plug Defects
Broken insulator and/or bent electrode.
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.
Figure 5-148. Spark Plug Gap
Check the spark plug gap.
Reset the gap at 0.025 inches (0.64 mm) if necessary and go to Step 2d.
If the gap is ok, go to Step 2d.