After approximately 2 weeks of sitting, I started my 75 300D for a few minutes to move another out of the garage. Then about 1/2 hour later I started again to move back in the garage (ran engine for no more than 2 minutes). Next morning she wouldn't start. Would crank and blow black smoke (more than normal) but wouldn't start. Pushed out and let sit in the sun for an hour. Restarted, runs fine.
Any ideas would be appreciated, thanks.