What was found
ON ENGINE START OF ENGINE NR 1 WHEN START LEVER WAS RAISED TO IDLE NO FUEL FLOW WAS SHOWN, NO N1 OR N2 ACCELERATION START WAS ABORTED. GROUNDED-YES. PERFORMED IGNITION SYSTEM TEST, IAW B737-800 AMM 74-00-00-750-801-F00. OPERATIONS CHECK GOOD. MANUALLY EXERCISED SPAR VALVE ACTR, REF AMM 28-22-00. ACCOMP NR 1 ENGINE RUN IDLE POWER LEAK CHECK. NO DEFECTS, IAW AMM 71-00-00-700-801-F00. ACCOMP FUEL PUMP IMPELLER INSPECTION NO DEFECTS NOTED, PER B737-800 FIM 73-31 TASK 803 P F(3)(A). R & R FUEL FILTER, REF AMM 73-11-02. PERFORMED AMM TASK 76-11-10 UP TO PAR E(2)(B). R & R NR 1 ENGINE START BRAKE ASSEMBLY, IAW AMM 76-11-10-010-801-F00. PERFORMED START BRAKE ASSEMBLY CIRCUIT VALUE RESISTANCE CHECK, REF AMM 76-11-00-420-801-F00. CIRCUIT VALUE CHECK GOOD. ACCOMPLISHED NR 1 ENGINE RUN IDLE POWER LEAK CHECK. ALL PARAMETERS CHECK GOOD ALL OPERATIONS LIMITS CHECK NORMAL, IAW AMM 71-00-00-700-801-F00.