My good friend bought a boat. He has never owned, driven and rarely been in a boat. I went with him on his maiden voyage Sunday. I get him and his boat in the water. 98 185 Searay with a 4.3 Mercruiser. Runs and starts great. Put into reverse and dies- does it every single time- all day. If I take it out of gear and put in reverse, it runs; but I don't know if that diagnoses anything. I know the shift interrupt activates to get out of gear- what is killing it to get into gear? If anyone has some diagnostic tips, I would appreciate it.