[natenasty351]

I have been fighting this problem for a month now and i can't figure out the reason for it. I have a 84 mustang lx with a holley 650dp on a 351w with a torker2 intake and also a holley electric pump rated at 15psi with a dead head regulator set to 5.5. When I first start the car everything is fine as far as pressure goes, it runs for about 10 minutes and slowly loses pressure all the way down to 1psi. I have a clear plastic fuel filter (new) between the carb and the regulator and can clearly see there is no fuel going in it but when i take the fuel line off the dual feed line for the carb i get plenty of flow. It's like there is air trapped in it. i don't think it is vapor lock because none of my fuel lines are by the exhaust. The car has a return line that i currently have plugged off, and the tank is vented through the gas cap so i don't think that would give me a problem. i have tried mounting the pump lower thinking it might have been pulling gas out of the tank instead of having it gravity fed, with no luck. I am out of ideas and starting to think it might be a carb issue. please help me i want to drive my mustang bad !!!