I put the boat into the water today for the first time since november. I have a Yamaha F115 4-stroke on the back of it, and after checking the fuel was primed, oil levels, etc, started her up. The engine took a few turns before she fired, then sounded a bit "juddery" for 30 secs or so before settling down and sounding as good as usual as I did my final preps.
I set off and got half way to the entrance to the marina when the bar above the oil lamp symbol came on and the engine management light started to flash at me. I turned round straight away and went back in.
I re-checked the oil levels (all ok) and went to speak to the outboard engineers up in their workshop. They told me to check for the telltale, that the oil wasn't "milky" and there was plenty of oil in it - all fine. They said it is possibly a sensor somewhere and the engine had gone into "limp mode". I started her once again and the oil "bar" had disappeared but the flashing EM symbol remained. I shut her off after 30 secs or so and came home.
I have now done a complete oil change on my drive (as the EM checks for oil contamination as well as levels) and will take it back out again tomorrow to see if this makes any difference. Other than that, does anyone have any ideas where to look?
Oh yeah - I am an outboard novice mechanic!!