My ef is out of gas at half a tank. It only takes 5-6 gallons to refill to full as it spits out of I try and pump more in it.

 

https://honda-tech.com/forums/performance-45/fuel-tank-kit-fcs-fab-ready-install-eg-ek-dc-ef-2639341/
All I could find with my friend "Search"

 

Because race car

 

drop the tank, then reattach the pickup hose and sock to the fuel pump.

 

Have you looked at the tank? is it dented?

There's a 2 way valve that relieves the pressure from the tank as it is filled. I suppose that could be your issue but I have no experience with this. I believe this runs to the charcoal canister under the hood.

Edit: I think Pimpwagon may have nailed it.

 

This is what I was thinkin. Always good to get others opinions in my experiences.

 

There's a possibility you don't have to drop the tank. On certain EF's You can remove the back seat and access it from the top. On my 91 hatchy I had to drop the tank. I have no idea about sedans.

 

A friend had the same thing happen to his very old jeep. We dropped the tank and found it was 1/2 filled with water. The o-ring on the sending unit had rotted so badly that it was just rattling around in the hole. I suspect that's where (over time) rain had seeped in.
Hope that helps.
Best of luck!

 

While i did a search on this subject I found a thread discussing this question. Some VW owner though, it ended up being a dummy half gas tank used for smuggling, the repair shop found that half of the tank was walled off and packed with cash.

 

I hope that's your problem. I also hope the bills aren't marked or sequentially numbered. LOL

 

That would have been nice. Dropped tank replaced rubber hose sock was there same problem. Replaced pump. Problem solved. New one to me.

 

F--k it. now you won't have to worry about a failing pump for another decade. LOL