Took it in to a mechanic to have the impeller replaced, he tested the compression and said it was fine. He changed the oil in the lower unit. Took it out on the water a few days later and it wouldn't start. It would crank, and continued to, but wouldn't turn over. Tried until the battery...
I have an old Mercury force that seems to run okay at low speeds, but when I accelerate to higher speeds it smokes and a the throttle has some alarm that sounds. I don't know much about boats, this is my first one. I have heard it could be the impeller, but not sure. I wanted to get an idea...
