340 Engine Shake

plumkrazee70 said
Come to think of it. I attached my timing light to each wire and got the spark light. Wouldn't there be nothing if I had a dead cylinder?

Only shows fire to that plug. If there is some crazy, valve event or some crap, the spark drop would tell ya. Yes, if no change, plug it back, and jump to the next one. Disregard, I didn't read far enough into post