Fuel Fluke

I am having that same problem. I am running a OE system with a new Summit mechanical fuel pump. The car will sit overnight and the filter will fill with fuel, but it runs out of fuel. Really sucks when you are at the 1/8 mile mark at the racetrack. I just went thru the entire fuel system this past weekend, blew it out, replaced hoses and clamps, etc. Still runs, but will stall for lack of fuel, is there an air bubble in the line somewhere? Where is the air coming from? Cap is vented.

That sounds just like mine would do... after the motor cooled the filter would fill back full of fuel. What fuel pressure do you have when you first crank it? What pressure do you have after the motor is hot? Mine would nose dive!

Ok... when you say "when I try and run it" does that mean that the motor is up to full running temperature? Mine would do it around 190 degrees. It took the motor awhile to get there but it would slowly heat up.