I have an 09 650i brute force that has started to have a small gas smell. It started a couple drives ago and I have found that the gas is coming from a small black hose that is on the left side of the motor. It comes down by the oil dip stick area and looks like it goes up and splits to two and goes I think to the carbs? The hose has a one way check valve on the bottom that you can suck out but not blow in. After I stop for the day I have to shake a few drops of gas out and wash the area below the hose. Its not running out but you can see its wet and smell gas when you stop. Any ideas before I call the dealer?