It worked fine last season. But towards the end of the year, the motor sounded like it was heaving a bit, but I could have just been low on fuel in the tank. I'll do a spark plug test in a while and update. however, I did have the ignition coils changed two years ago, so they are fairly new. I...
My 1985 Mercury 25hp xd outboard crank but won’t turn over. I have changed both spark plugs. Changed the fuel filter. Checked the battery and made sure it has clean connection and is fully charged. I even hooked up a battery pack to it and it didn’t turn over. Sprayed gum out in the carburetor...