1979 Honda CB750K 4cyl with 1607 original miles. It hasn't been started in probably 15 years. The inside of the tank is clean, but I suspect there might be a little build up in the bottom of the tank where there is about an inch of gas. I don't want to start it till I know for sure. Haven't decided if I am going to sell it as is or pull the tank/carbs and get it running first. The bike has sat in a garage it's entire life.