I have a 40hp merc. and now within the last few weeks i was on the lake and went to start my motor and it kept turning with the key in off, and i had to disconnect the power at the battery. A hour and a half later no problem. The other day now i was way up the river and went to start the motor and it was taking a little while to start (regular for the motor) after a few times turning the key it just stopped working would not turn the motor no more just a suttle click noise when turned to start. Any ideas whats causing these issues??