Last fall, when I put the car away for the winter, the spark plugs in cylinders 3 & 4 showed heavy soft black carbon. The other plugs were normal in color. When I began getting the car ready for warm weather, I pulled the cover nuts from the fuel assembly strainers. The front and rear carbs were dry in that area, but there was still fuel in the center carburetor which I believe delivers fuel to cylinders 3 & 4. Does any of this suggest what might be going on with cylinders 3 & 4 and the center carburetor having what I'm guessing is a full fuel bowl?
Dave
Dave