My '68 302 is having some starting problems. It sat for 20 years. The original coil died and I replaced it. The car ran perfectly for a month, then it was having these symptoms again. In the morning I'll go to start it and it will just crank and not fire. It's not flooding, it's getting fuel. Everything in the ignition system was replaced 4 years ago. But the car has only been used for 2 now. the key was not left on. I'm not sure where to look. Thank you!