I have a 1984 28 ft Carver Mariner. Just bought in Dec 2009. I have taken the boat out only once because of repairs. The other day I had both engines running in the slip when I shut them down one started laboring, dieseling whatever you want to call it. I then tried to restart and the starter just makes a pinging sound like it can not turn the engine over. I saw some threads concening hydrolocking. I'm not familiar with this. Is this an issue with the starter or has the engine locked up? Thanks for your help.