Hi Guys

The last days I've noticed that maybe I've a fuel boiling problem on my 74 Fury, I can see the fuel bubbling on the fuel filter but the strange think is that I don't heard any bubbling sound in the carb bowl so maybe the problem is between the fuel pump and the gas tank.

I touched the fuel line to check if is hot but all the line is at normal temp and near the fuel pump becomes a bit hot but not too much

I live in Colombia and down here all the gasolin has between 10 % and 12% ethanol content, I don't know if this can be the reason

My fuel line set up seems to be the factory one and the exhaust isn't near.

Here's video of the fuel filter bubbling
http://vid1067.photobucket.com/album...ps5p6pmbnk.mp4

 

Looks like it's sucking air before the pump, or the pump is going bad. Check for leaks under the car.

 

agree

 

But the bubbling starts when the car has been running for 30 minutes at least, if there were a leak in somewhere the bubbling wouldn't happen since the car starts? I've never saw a fuel leak around the car but I'm going to check again just for be sure.

I read that sometimes can be air coming through the fuel system from the gas tank, how that can happend?

I've never changed the fuel pump so could be wear too (I think is the car original pump), is there a way to check if the problem is inside the pump?

I just remember something: When I bought the car the canister was plugged to a device called "Vacuum Amplifier" when I swap the 2 barrel carb for the actual 4 barrel I unplugged that device and now the canister is unplugged. Can this be the cause for air leaking into fuel line?

 

I'm not sure, but it couldn't hurt to change the fuel pump. Assuming its mechanical it couldn't hurt. I just recently had a problem with the one in my 'Cuda. The diaphragm went bad in the pump and it basically pumped fuel into the crankcase. They are cheap and easy to replace.