so the previous trip. my engine started acting up... and this past trip over the weekend.. she just didn't want to cooperate... takes a bit to start up.. but i think that could just be the cold weather..

so the motor shakes pretty bad now once it's running.. and then at full throttle.. it's not even at full power.. i would say it's running 30% .. the rentals at Skinner were passing me up... it took forever to move around...

anyone have any ideas? it's a Yamaha 15 hp 4stroke.

Going to check replace the spark plugs next.. i'm thinking maybe one of the cylinders is not firing?

I am going to bring it in for a normal service none the less.. but not sure if they will diagnose anything for me without charge... just thought i'd ask here to see if anyone has any good info.. thanks guys..