What was found
LEFT SPAR VALVE CLOSED, LIGHT CAME ON AT CRUISE AND STAYED ON. RAN QRH. ALL ENGINE INDICATORS NORMAL. ACFT GROUNDED. ACCOMPLISHED FIM TASK 28-22-00-810-809 NR 1 ENGINE SPAR VALVE OPERATES NORMAL. FAULT DETERMINED TO BE INTERMITTENT. ON SUBSEQUENT FLIGHT, ENG NR 1 FUEL SPAR VALVE CLOSED LIGHT ILLUMINATED IN CRUISE. ACCOMPLISHED QRH PROCEDURE. LIGHT STAYED ILLUMINATED. REMOVED LT SPAR VALVE ACTUATOR IAW MM 28-22-11-000-804 AND REINSTALLED VALVE ACTUATOR IAW MM 28-22-11-400-804. OPS CHECKED GOOD.