Restarting issue with my 300SD

[ytr1903]

My 1984 300SD has run flawlessly for quite some time (which is why you haven't heard from me). My problem is that the car will start fine in the morning and run like a top, but if I shut it down and immediately try to restart it, the starter will just turn the engine without starting. If I let it sit for a minute or two, it will start normally. Any ideas?

Thanks,
Tom