TM 5-3740-21414
Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE BACKFIRES (Continued)
(1)
Loosen the spark plug a few turns.
(2)
Blow out the spark plug well with high pressure air. This will clean out any dirt or debris that can
fall into the cylinder.
(3)
Remove the spark plug by hand.
Figure 5-188. Installation of Compression Gage
c.
Place a compression gage in the spark plug hole. Make sure it seals well.
Figure 5-189. Choke Open Position
5-170
