Percolation? Heat soak? Don't drive during summer??

When cranki g the car over the coil acts normal. It only does that when i first turn the key to the on position before starting to crank it over. Once I start to crank it over it goes normal.
Ok, so I'm reading that you had somebody crank it over while you held the coil wire and it fired normal while it was hot and wouldn't start. Then did you check the spark coming out of the distributor the same by pulling a plug wire and putting a spark plug in it, while it's hot and won't start?