I have a Mercruiser 4.3L. (year 2002) The power is ok up to 4000 RPM but it will not go up to 4600-4800. The propp is the same as in other boats of same type and they goes up to 4600-4800 RPM<br /><br />Can it be timing or carb settings or something else?<br /><br />The top speed is nearly same...
