TEST OPTIONS                REASON FOR QUESTION     Visual inspection             KNOWN INFO                     POSSIBLE PROBLEMS        NO 8. YES Replace fuel filter (para 4-14).            TEST OPTIONS                REASON FOR QUESTION     Visual inspection             KNOWN INFO                     POSSIBLE PROBLEMS        NO 9. YES Replace fuel tube from fuel filter base to engine head (para 4-10). TM 9-2320-365-20-1 Faulty fuel filter. Faulty fuel tube. Faulty fuel pressure regulating valve. Faulty orifice tube assembly. Faulty cylinder head. If fuel does not flow from fuel filter, fuel filter is faulty. Malfunction in fuel system. Engine cranking speed OK. Fuel return hose OK. Fuel supply hose OK. Fuel tank OK. Fuel/water separator OK. Fuel transfer pump OK. Fuel transfer hose OK. Does fuel flow from fuel filter? Does fuel flow from fuel tube? Malfunction in fuel system. Engine cranking speed OK. Fuel return hose OK. Fuel supply hose OK. Fuel tank OK. Fuel/water separator OK. Fuel transfer hose OK. Fuel transfer pump OK. Fuel filter OK. Faulty fuel tube. Faulty fuel pressure regulating valve. Faulty orifice tube assembly. Faulty cylinder head. If fuel does not flow from fuel tube, fuel tube is faulty. 2-106.4          Change 1 b1. ENGINE CRANKS BUT DOES NOT START OR ENGINE STALLS AFTER STARTING (CONT)