I have taken my boat out twice this year and she is running great but when I first start the engine & I am at idle and standing near the rear I can smell what to me , seems like a mixture of exhaust and fuel. FYI Before I start the engine I open the engine compartment and turn the blower on, which has been replaced this off season and is running great. When I smell the fuel mix at idle I also turn the blower on and it diminishes and seems to disappear all togather once I get going and seems fine when I return to the marina. My question is does this sound like normal SOP or is there a concern . When the boat is ideling and after I shut it off I check for gas leakes and cannot find any problems. There is no discharge into the bilge area or the water and my gas seems like it is burning at a normal rate. I believe it is just like most I/O motors and is normal but I would rather be safe than sorry. Im new to boating and I am learning more and more every day so thanks for being understanding.