Some additional observations:
Loosening the connection to either the fuel distributor or the fuel injector on cylinders 1, 5, or 6 caused an immediate effect on the engine performance -- loss of rpm's and rough idling. However, doing the same for cylinders 2, 3, or 4 had no effect on the engine performance. In fact, the lines could be completely removed and there was no detectable change in engine performance. Connections for cylinders 2,3, and 4 are on one side of the fuel distributor while those for cylinders 1, 5, and 6 are on the other side. Would this observation imply that there is a probem with the fuel distributor? NOte, however, that when the connections for cylinders 2, 3, and 4 are loosened, gas does flow out, so at least some gas is being pumped to these lines.
I live near Bristol Connecticut. Does anyone know of any good shops in this area?