[renaissance man]

Don,

That was exactly my problem. As the vent tube connected to the top of the filler neck, when the LeMans cap is shut it has a rubber seal all the way around it. Once all of the air is extracted out of the tank, it creates a vacuum and can't effeciently keep fuel flowing. I used to go 20-30 minutes then the car would die. After I removed the vent from the filler neck and ran it under the car and above the differential so that it was high enough to not drain accidently and was getting air from the outside, my problem went away. This acts like a can with two holes in it. I can post pics if you like?

Regards,