> Otis, I think you have it. This is EXACTLY what I
> hear. Today, I pulled the valve cover and could NOT
> find the problem so pretty much isolated it to the
> manifold. Now if I can only pull it without pulling
> the engine.... Ain't much room in a 73, especially on
> the left side. The good news is that I think I have a
> spare.
You can did it with a little wiggling... Been there done that (twice)!
Steve