I bought a used 1995 Searay with a 3.0 merc with about 200 hours on it about 2 months ago. Needless to say I am new to this boat and the 3.0 merc. I have had the boat out a few times and have noticed that the motor boggs for a second or two when I go from a dead stop to WOT or when I go from about 20 mph to WOT. Also after running fast for a while and then going to idle the rpms will drop and it would stall after about a minute. I took it in for tune up and they did the ususal plugs, cap, dist, timing, and carb tune. The idle problem is gone but I still have the 1 second hesitation. What else should I be looking for or is this the nature of the beast? Also the boat has accumlated black smoke lines on the stern, which I was assuming were a result of a rich mixture at startup but it could be rich all the time. I haven't detected any smoke while running but that would be hard to see anyway. Outside of the hesitation the boat runs great.<br /><br />Thanks,<br />Ryan
