Fuel Filter Empty in the morning!

[Tillik]

This has happened 4 times since I've owned the truck. Approx 3 months. My Driveway angles downwards into my garage. So the truck is parked on a slant most times. The Truck turns over very strong and cranks and cranks and cranks. When I pop open the hood the clear fuel filter is empty. Even tho I crank it several times, the fuel doesn't seem to make it to the filter. I use my generic pump and connect it to the filter. A few pumps and the fuel gets to the filter. Reconnect and fires right up. Don't see the issue for a few weeks.

Truck Info - GM 350(Old), New Carb, Intake, New Fuel Lines-Filter, New Behind Seat non-efi Fuel Tank. No obvious fuel leaks in the line that I can find.

I'm going to change the fuel pump out because it's the only item left in the system. Does the mechanical fuel pump have a valve that would maintain fuel pressure when the engine is not running? If so, should I be able to suck the fuel thru it without cranking the engine. Any input would be awesome. If the new fuel pump solves it, I will eventually post a follow-up.

[mmiddle]

Change the pump. The pump has a check valve in it that is apparently bad. One way to test this is to loosen the gas cap at night for a while. What is happening is during the day the tank pressurizes due to heat. At night it cools and the fuel contracts, thus sucking the line dry.

[big mike71]

Don't use glass fuel filters. They're a fire hazard.

[Mister-B]

I might be oversimplifying this, but have you tried giving the gas pedal a pump or two before turning the key? It makes a big difference for me when I do that.
Posted via Mobile Device

[LockDoc]

-
You say you have a new carb but don't say what it is. If it is a quadrajet is there a filter in the carb inlet? They also have a check valve in them that keeps the fuel from draining back to the tank.

LockDoc

[mmiddle]

If he has a Quadra-bog chances are the primary metering wells are leaking down over night.

[Tillik]

Ya I def pump the gas a couple times lol.

The Carb is an Edelbrock 1405-600cfm.

It's a plastic fuel filter from Orielly.

I will try a new pump this weekend and see if that cures it.

I work in maintenance for an airbag manufacturing company, and intermittent issues can suck sometimes. As long as I can see fuel in the filter it starts in a half crank every time. Thanks for everyone's input.