TM 10-3930-669-20 2.  ENGINE CRANKS BUT WILL NOT RUN (CONT). KNOWN INFO TEST OPTIONS Engine cranks. Glow plug indicator operates. Fuse 2 OK. Wire 6 OK. Wire 34 OK. Relay R4 ground wire OK. Wire 7 OK. Wire 9A OK. Relay R4 OK. Fuel shutoff solenoid OK. Voltage test. STEA/CE-R #89. POSSIBLE PROBLEMS REASON FOR QUESTION Glow plugs faulty. Throttle adjustment incorrect. Water in fuel. Fuel injector(s) faulty. If 22 to 24 vdc are not measured, glow plug(s) is faulty. 2-42