They can be, but it might not run right! There were a lot of different changes made over the years, some work together, some don't.
With the engine cranking, hold your hand over the top and choke it real good, it might pull fuel that way. I would say clean it again using wires and pipe cleaners down every hole. You might take it to shop with a bigger air compressor then yours and have them blow it out.
Joe
