The valve spring thing was just a guess by my buddy, after he heard it running, since he had a similar problem with his '67 Corvette some time ago. Turns out a plug wire was arching due to a crack in the insulation. New set of wires and plugs and she is running sweet.
Iffn ya can get the wifey to walk a mile or more each day it may really help with overall health. Prolly need to start slow and build up if she has been sedentary for a long time. Good luck.
deadeyedick wrote: