Reply to "Suddenly no spark"

I shut off the car after an outing, it had been running very well but lately I had been getting high oil pressure readings, about 70 lbs. cold or hot. So the next weekend I replaced the oil pressure sending unit I tried to start the car to test if the oil pressure problem was taken care of. The moment I turned the key I got what sounded like one cylinder briefly fired once, then the engine kept turning over rapidly without firing. I tested for a spark on the cylinder eight plug wire, it's easy to get at, but got nothing. Then I pulled the coil wire from the distributor and turned the motor over. I got a nice hot spark. This lead me to believe the problem was with the rotor or the distributor cap as a spark was being delivered to the cap. But both look absolutely fine. No apparent cracks, corrosion at the terminals or condensation, and the cap was located properly. I drive the car almost every week and it always runs well. But you just made me wonder if the problem is connected with the oil pressure reading, as the distributor shaft also drives the oil pump. Why then suddenly a high reading? The oil level is right on and the car uses no oil.