My car stalled out on the road.   There was a little fuel in the filter bowl, but when removed the top of the carb it was empty.  I removed the fuel cap, no change.  I removed the fuel line into the carb kept cranking for a minute or two and the fuel started flowing.   The car started and I made it home, but I noticed a lot of bubbles in the filter bowl.   There are no leaks ANYWHERE.   I would assume if air is making it into the filter there would be a fuel leak wherever the air can enter(???)

Last year I replaced the tank, all hard fuel lines, the hose that feeds the pump and I had the pump rebuilt (pump was a "made in Canada" version that came with the car).  

This week, I bought another rebuilt AC fuel pump (from AG Rebuilders) and a new 55 vented fuel cap.   Went for a ride the same thing happened after 40 minutes the car feels like it's running out of fuel (tank was filled today and it's still at least 3/4 full).
I am going to empty the tank, to ensure everything is clean and look at the tank pickup with a bore scope.
Any other ideas?

Replace the fuel filter.

Another vote for the filter.  

I changed the fuel filter today it didn't make any difference.   The old filter was 5 months old no sign of dirt  I also checked the screen filter in the carb which was clean

Have you changed anything else? Did you remove a carburetor spacer or something? It almost sounds like vapor lock but it’s not even hot yet.
Could you have a bad carburetor or power valve or something and it’s leaking back into the engine? How does the oil smell?

Have you had the car on the road for awhile?

I bought the car October 2023.   Last January 2024 I replaced the tank, all steel fuel lines, the hose that feeds the pump, new gas cap, pump rebuilt (made in Canada).

Yesterday I installed an original AC fuel pump made in USA that was rebuilt and I tried a new gas cap.   No change

Today, I drained the tank there was some dirt in there. But I don't think it was enough to clog the tank pickup. I also blew out the fuel lines with compressed air.

The car is running well. When I first started the car the fuel filter was at least 3/4 after driving 20 minutes the fuel level dropped towards the bottom of the filter. And the bubbles are still in the filter bowl intermittently.

I am going to try to see if the hardlines from pump to tank have any leaks. I assumed if there was a leak I would see brake fluid coming out, but someone said before the pump the line is vacuum and if there is a pinhole it might let air in and it might be too small for a fluid leak.

Someone suggested to disconnect the lines plug one end and apply vacuum and see if it holds.

An electric pump might be in my future

Do you run fuel that has ethanol in it? If so, check out this article I wrote - it has video as well showing the bubbling because of the low boiling point of ethanol. 

https://www.hotrodreverend.com/post/2019/07/13/1955-ford-part-81-running-with-the-devil

At times, gas stations have way more than 10% ethanol in their "gasoline" and that only makes matters worse. Get a tank of that and it's really a problem. Ted Eaton has more on this concerning fuel that has ethanol and his personal testing of the percentages. Typically, the high octane version at the pump will have the least amount of ethanol.

Daniel Jessup

Lancaster, California

aka "The Hot Rod Reverend"
check out the 1955 Ford Fairlane build at www.hotrodreverend.com

An air leak on the suction side of the fuel pump is a possibility.  If still using an original style fuel pump inlet hose, then check the connection on that hose that hooks up to the steel line that runs to the back of the vehicle.  I have seen those steel line flared ends with cracks which will allow air to suck in thus either reducing or stopping the fuel flow to the pump.

Lorena, Texas (South of Waco)

In NJ non ethanol is VERY difficult to find.   I have been running regular.   I will try Premium.

Last night I checked fuel pump pressure at idle (about 600 RPM) pressure was between 1 and 2.   As I increased RPM's the pressure went up to 4.   The pump I have in the car was rebuilt by AG Rebuilders and it's an original AC pump.   I just got it this week

It is 75 degrees here today I took the car out to do further testing.   I measured the temperatures of the top of the fuel pump and the glass filter top.   Both were at ambient temp.   Started the car the filter was 90% full and no bubbles.   After 20 minutes of non highway driving the pump was about 120 and the filter was about 100.   When I got home the temp of the pump was 145 (filter assembly stays cooler).   Temperature around the head were the temp sensor is was 170

I parked for ten minutes when I started the car it died in my driveway.

I removed the fuel line to the carb and it was NOT pumping.  I removed the gas cap, no change.

I poured water on the fuel pump it cooled down to 120 and started pumping again.

After viewing Dan's video I am thinking it may be more related to heat/ maybe the pump needs more pressure to over come the heat?????

I went out again (put in premium fuel) and the car stalled on the road (2nd time today).   Completely stopped pumping fuel (fuel pump temp about 145).    I tried using the water to cool the pump but that did not help (this used to work on another car I had).   I removed the line to the carb and no fuel was pumping, it was bone dry.   After sitting there for 10 minutes and cranking on/off it started to spit a little and then it eventually flowed normally.   It's almost as if It has to overcome a blockage "somewhere".

A few people have mentioned a possible leak on the vacuum side of the pump, as Ted mentioned above.

I am going to run a temporary fuel line from the tank to the pump and see if it makes a difference with the bubbles and the "blockage".