ARMY TM 9-2805-262-14
AIR FORCE TO 38G2-90-1
NAVY NAVFAC P-8-613-14E
SYMPTOM INDEX
Symptom
Page
Engine fails to start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-4
Engine starts but fails to keep running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-6
Engine misses or runs erratically. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....................4-6
Engine surges or overspeeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-7
Engine over heats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-7
Table 4-2. Unit Troubleshooting Procedures.
Malfunction
Test or lnspection
Corrective Action
1. ENGINE FAILS TO START.
Step 1. Remove air clean element and start engine (para. 2-9).
If engine starts, service air cleaner (para. 4-14).
Step 2. Check ignition switch models 4A032-1 (serial nos. G001001
Replace ignition switch if defective (para.4-45).
Step 3. Inspect spark plugs.
through G004004), -2, -3, -4.
Clean, regap, or replace spark plugs as necessary (para. 4-28).
NOTE
This procedure may be performed with either a digital or analog multimeter.
Step 4. Check spark plug cables.
Replace a defective spark plug cable (para. 4-27).
Step 5. Check breaker point gap.
Adjust breaker point gap as needed (para. 4-49).
Step 6. Check ignition timing.
Adjust ignition timing as needed (para. 4-50).
4-4
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