# days ago, at Lake Keowee,SC started right up and ran fine for about 5-10 minutes. Then it suddenly lost power. Moving the throttle only made a slight difference from idle. Started right up every time. (6-7 times) Well yesterday, I thought it must be spark plugs. I went to the marina and bought new plugs. they were not champion, which were in it.They are (NGK BR9HS 4522). I installed them and it started right up and ran like new for 5-10 minutes. Then suddenly died. Will not restart. Will hit after about 6-10 attemps but will not start at all. Any idea on what I should check to fix this. We were stranded most of the day yesterday. Any help from a person who may know is greatly appreciated. Thank you