TM 10-3930-669-34 5.  ENGINE OVERHEATS (ENGINE TEMP GAUGE READS OVER 250°F [121°C]) (CONT). KNOWN INFO Engine oil level OK Injection pump OK. POSSIBLE PROBLEMS Injection pump timing incorrect. KNOWN INFO Engine oil level OK. Injection pump OK. Injection pump timing OK POSSIBLE PROBLEMS TEST OPTIONS Injection pump timing check. REASON FOR QUESTION If Injection pump timing is faulty, engine will overheat. TEST OPTIONS Verify repair. REASON FOR QUESTION If engine does not overheat, fault has been corrected. Adjust injection pump timing (Para 4-4). Go to Step of this Fault 2-50 WARNING Read WARNING on Page 2-51