What was found
PILOT REPORTED ON START OF RT ENGINE, ROTATION ACHIEVED UP TO 13 PERCENT, BUT ENG WOULD NOT START. START TERMINATED, AFTER 2 MINUTES ANOTHER START ATTEMPTED AND ENG STARTED NORMALLY. MAINT CONSULTED AND AFTER STUDY OF WIRING DIAGRAM, PILOTS WERE ASKED TO OBSERVE IGNITION AND BOOST PUMP ON LIGHTS. ENG STARTED NORMALLY ON NEXT 2 STARTS, BUT ON 3RD, ENG DID NOT LIGHT OFF, SO PILOT SELECTED IGNITION MANUALLY AND ENG STARTED. PILOTS NOTICED STATUS OF BOOST PUMP LIGHT. MAINT PERFORMED 2 ENG STARTS. 1ST START NORMAL, BUT 2ND ENG DID NOT START. AGAIN, IGNITION SELECTED MANUALLY AND ENG STARTED AND BOOST PUMP LIGHT ILLUMINATED AND FUEL PRESS LOW LIGHT WAS OUT. NEW RELAY INSTALLED AND ENG STARTS NORMAL.