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Good Morning Karl, To answer your question, yes, its possible you have a sticky valve, however, I would take a look at other possible causes such as ignition first. 1) If its always a miss on just that one side, you might take a look at that sides plug and plug wire and the distributor cap and rotor. The same set of points and condensor produces both sides spark, so differences in spark just on one side can be a plug or wire or cap problem. 2) If the plugs are even slightly fouled, try a fresh set first, or try swapping the plugs and wires from side to side to see if the miss then occurs on the opposite cylinder side. If you can get the missing side to change with wire and plug swaps, then its that plug or wire problem. If the miss still remains on that one side, then inspect the cap and rotor for differences in the ends or inner cap terminals and look for cracks or carbon traces. If the cap and rotor are fine and she still always misses on that same side regardless of plugs or wires, then it could be an engine and/or valve problem. Have you looked at the valve lash settings??? Have you taken a compression test to see if that one side is greatly lower????? Hopefully its only a plug or wire problem, try those easy cheap thigns first, then suspect a difference or problem in the cap and/or rotor and that and the swapping tests and finally a compression and valve lash check might get the old girl runnign just fine. If a sticky valve problem, you may try some Marvel Mystery or other top cylinder lubricant and get her hot and use her hard and she may be fine. Dont forget to inspect the valve springs for any breaks if youre under the cover, that may be a problem also. Good Luck n God Bless John T Nordhoff in Indiana
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