You're right about the ignition system. With distributors, there is never certainty. The one thing I would note is that the distributors do not provide spark to just the bank they are located on. Some of the wires cross over... With my issue that means one of the malfunctioning cylinders gets spark from the driver side distributor and the other two get it from the passenger side.
I would also agree that if the fuel system is working on one side, then it should work on the other side just the same.
Thanks for the input!
