Help with diagnosing engine failing to start

DArcy

.
Feb 11, 2017
1,691
Islander Freeport 36 Ottawa
The first time I went to start the engine on my boat, after having it trucked to my harbour and it sat over the winter, I went to start the engine and there was nothing. No click, didn't turn over, just nothing. I called the previous owner and he said that happens and to find the bottle of contact cleaner in the chart table, separate the white connector in the wiring harness and spray it with contact cleaner. I'm guessing this is what is referred to as the "trailer connector". They are not very reliable. I sprayed, it worked and now I spray regularly.
 

senang

.
Oct 21, 2009
304
hunter 38 Monaco
If you still have the same issue find the point where the ground is connected to the engine block. Clean connection and TIGHTEN the bolt. Solved the issue on my 2005 Hunter 38. Engine vibrations caused intermittent starting of engine. Invisible to the naked eye.