I have a merc 125 saltwater hanging on a bayliner trophy 2002. Recently i have seen my fuel economy drop right down to 1 mpg. Nothing has changed on the boat in terms of weight on board etc and the hull is clean. Revs are similar to before running around the 4300 mark. Anybody any suggestions. Could the carbs have gone out of balance. Im told the 2+2 setup can be tricky. What economy should i expect. 3/4 mpg???
