1987 3.2 carrera bogged down on me last week on 60 mile trip. Got home popped the hood would not start. Troubleshot determined it was the DME relay. Ran for a little while seemed good. Attempted to start a little later and it was hydro locked. Disconected DME took out spark plugs cranked fine. replaced spark plugs started and burned white smoke. Checked oil and discovered fuel in brand new Amsoi l(100.00 down the drain)

changed Oil and filter again. tried to crank hydro locked again. Checked spark on hydro locked cylinder has spark. When I say hydro locked I mean it will not turn over almost like it is siezed. Turned over once I removed the one spark plug. Driver side closest to the bumper. Anyone have a thought?
Thanks
Sam