I recently bought my first Mercury (1999 200 EFI, 0G840098) knowing that it had been stored for an unknown period of time. I emptied the fuel, cleaned the VST, replacing the fuel pump, fuel filter, lines and anything else that held old gas. I started it connected to a water supply and it ran. I ran it about 2 hours the first time out with no issues. The second time out started great. I ran down the lake about 8 miles at ~55mph with no issues. When I sat down to start fishing the motor stopped and has not started since. It will turn over, but does not fire. I'm thinking fuel pressure regulator, but I wanted to post to see if anyone had seen this before I drop $300.