I have a 1983 interstate goldwing that is blowing white smoke, this smoke also smells like fuel and is leaving a residue on the floor behind the exhaust. The bike starts fine but after 5 mins it is really smokey and uses alot of fuel. I thought that the bike is running rich, I havn't used for awhile as I have been in hospital for 6 months. If it is running rich how do I correct it. Thanks for any advice.