[TooManyToys]

In another forum we just had a well-respected member have his pickup foot disintegrate and clog the line. Those pickups are no longer being sold by Ford and the aftermarket ones come apart in a few months.

However, the air in the fuel bowl is often an o-ring issue as Hydro said, filter cap, drain port, or rarely the cover.

 

[TooManyToys]

I might as well post the link to the video I did on these if anyone comes across the thread and is interested. It includes the poll of failures.

 

[TooManyToys]

In the other forum, Eric had fuel delivery issues. There were a few problems, the blue spring kit had to be replaced, but the main issue was after 15 years, the foot in the tank disintegrated. That's been happening recently, probably due to age and the bio content in some fuels. As I mentioned, Ford does not supply these anymore, and on this and other forums the aftermarket replacements are not made from compatible plastic. The reliable alternative right now is to go to a sump.

A picture of what Eric found in his tank, and despite the cleaning and repair, still had issues probably due to debris in the feed line. A sump without the OE feed line has resolved the issue. He went as far as replacing the HFCM to no avail. A different issue due to bubbles, unless the foot is completely gone and the tank level is not where you think it is.

 

[TooManyToys]

3/8" on supply. 5/16" on return.