I was having a pootle at the weekend and had a strange problem with my old 2 stroke, 90hp mariner clam-shell.......said motor is set up with an hour meter, a trim gauge and a rev counter and, touch wood' had never missed a beat.
As usual I ran the rig up on a set of mufflers to make sure everything was hunky dory and it was, started first turn and good flow of water through the tell tale.
Out at sea about 3 miles into the cruise there was a sudden loss of power and the engine wouldn't rev, 'ahhh thinks I a carb issue, dirt or blocked nozzle', maybe two minutes later everything great and off we go, again
Blast up to Holy Island so about 15 miles, touch of lunch and off home again, about 0.5 miles out I get what sounds like a oil alarm.....'engine off, checked and its at three quarters', engine on and away we go about 2 miles further on the trim goes full scale deflection as if the engine is 'lifted' and the rev counter sticks at 3800rpm, well with the current frau wright on board I don't hammer it.
Switch off the engine/ignition and restart and she fires straight up and away we go, this happened another twice on the way back home!
My good friend the ancient diver thinks a short circuit somewhere, potentially in the throttle assembly, I had a full service with all manner of new looms etc at the start of the season by a well known NE chandlers, any ideas and/or suggestions of a good Northumberland/Borders based marine electrician as I want a second battery and changeover switch fitted anyway!