Computer timing controls have dumbed down mechanics to the point that few "professionals" and almost no hobbyists are able to actually evaluate what's going on in a mechanical distributor.
Jerry
I like this one... Wich is very true.
I learned to always go back and referred to your bases. ALMOST ALL of them do not and just play the parts changing game.
I did learn at a very young age, grandpa told me... There is two kinds of mechanics, the real mechanics and the parts changer... You decide which one you want to be, but parts changers don't fly here....
The sad thing is, like most hands-on trade, it's a dying art.
To come back to the original subject, I would also suspect bad fire. Sometime the plugs might look good and have a nice fire OUTSIDE the engine, but do not fire good under compression. Remember, air is an insulator. 6-7:1 compression ratio is much more harder to spark. A good ol plug tester test plugs under pressure.
By the way, plugs are a good place to start if you want to play the parts changing game, there are cheap, and not always a bad thing to change, specially in an old engine causing problem.
J. F.
