Bought the boat in February. Had engine completely gone through by marine mechanic. Carb kits, new fuel lines, new plugs, new impeller, compression checked wonderful. First three times using boat the motor started quick and ran perfect. Went out today, started up great. Idled it about 150 yards from marina and killed engine to fish for a bit. When I tried to restart....nothing. Motor turns over but doesnt even attempt to fire. Used trolling motor back to marina. Checked and cleaned plugs, no loose wires, appears to be getting fuel, bulb pumps up tight, but zilch. Its as if it is getting no fire whstsoever. What could cause it to instantly lose fire? Motor has ran fantastic up to this point.