I have a 1987 Regal Sebring 19' bowrider with a Mercruiser 470. I the motor runs but is rough. I was going to take it in and have it tuned up to get it running smooth again. When I start it I need to open the carb all the way up to get it to fire, if I don't it just keeps turning over without starting. I would like to have it back to the point where when I turn it over it immediately runs smooth. Will a tune up do this with come carb adjustment etc. or should I look for a new motor? If I need a new motor then which is compatible with the rest of the merc drive system or would I have to look for another 470?
Thanks for the help.
Chris
Thanks for the help.
Chris