If no spark could also be the crank position sensor. At least it was in my case with exact same symptoms. Could run for ten minutes or an hour depending on ambient temperature?

Easiest way to check is when dead cold, test the sensor at the ezl. I'm betting you have a low reading of around 500/600 ohms. Start up and when it stops test the sensor again - if no reading the sensor is dying. If the sensor is good you'll have a reading of 800/1200 ohms. My experience with a bad accumulator is always having two shots at starting when hot.

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1990 300TE

"24 hours in the day. 24 beers in a case. Coincidence? I don't think so."