My outboard boat moter will turn over but will not start run fine all day but on the way back running good then just cut off
My boat motor will not start
I'm cheak battry and cheak the full system and crank position senser
First checking the firing, then check the gas tank for water, if you have a outboard engine, I'm betting it is water that is your problem
Take the spark plug that is the second firing order out of the block if it runs but roughly its the exhaust valves.
Probably a dumb question, but, is it a direct drive? I know my buddy's Mastercraft did the same thing and he checked everything before finally discovering that the ignition safety switch needed to be turned back to the correct position.