Need some help. I have a 75 hp 4 stroke with less than 200 hours on and the motor locked up, I guess. Not sure what happened. We were running fine and never had any problems. It skipped and sputtered and started clanking then started to smoke. Once we got back to land my husband took off the spark plugs and one of them was broke. My husband knows its bad and we have to get it to a honda dealer but what do you think happened?
