Last week my family were cruising the river. We ran the boat a 1994 Cobalt 200 w/ Volvo Penta Ford 302 for about 2-3 hrs no issue. This would be the 3rd weekend in a row we used the boat no issues. While headed back to the ramp we ran pretty quick but not quite wide open as we approached the ramp I throttled back to an idle to let my son take over..the boat died. No stall no rough idle it died just as if you turned off the key. I immediately attempted to restart but it would turn over just not start. I raised the hatch to the motor and fuel was everywhere. I got a tow to shore. Cleaned it up let it sit nothing. Loaded went home. Next day checked for fire had fire and the boat actually tried to run. I let it sit while at work hasn’t hit a lick nor has it came close since. Changed coil, plugs, electric ignition, wires, fuel pump and cleaned carb. Still will not run. This morning ran for 3-5 seconds and this afternoon I could get it to attempt to run with full throttle. Any ideas what I need to do to solve this problem?