[renaissance man]

This is what happened to my car last year (if I'm not diagnosing this incorrectly). After sitting for a few minutes I could start again, then the car would stall out. Looking at the fuel pressure guage it looked as if no fuel was pumping. Bottom line was the gas tank did not have a proper vent to the outside to avoid cavitation. It was only vented to the filler neck. Not good enough with a rubber seal on the LeMans caps. If this is what you are running up against, I can tell you how I fixed mine for $5.

Good Luck...