We have a 1996 Volvo 7.4GL Carb, when we start it up I notice it smokes quite a bit. I don't notice it as much while underway, but anytime it's at an idle it smokes quite a bit. Is there anything I can look for or add to the oil/gas to limit this, or is this a bad sign of things to come. It starts right up and has no shortage of power. It just makes everyone at the dock and our cabin smell like exhaust. I talked with someone else about it and they mentioned it's a big block carb most run rich and it is what it is, but I'll like a second or third opinion on the matter. Thanks everyone!!!