1987 - 1996 F150 & Larger F-Series Trucks1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks
Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.
You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!
My son and I are fixing up a 1987 F150 that has dual tanks. We took the rear tank out to replace the sending unit and pump and in doing this we ended up cutting the filler tube. There were actually 2 tubes, one inside of the other. This is only my second tank I've ever dropped and I don't remember the other one having 2 tubes. It was a 97 Suburban and it had only one filler tube. Does the filler tube going back have to be constructed that way or can it be a single tube?
This concentric-hose setup is Ford's way of saying "eff you" to the customer - basically when you fill the tank the fuel flows through the inner hose, and the air it displaces in the tank gets pushed out through the gap between the inner and outer hose - if you have a gas-powered truck this means it takes you forever to fill up your tanks, and if you have a diesel like me it leaves you stuck looking for a car-diesel pump and then trying to get to it with a big trailer. There is a solution to the problem, it involves removing the rollover valve from the top of the tank and installing a barb-hose fitting in its place, then running a large hose from said fitting to the filler neck where you drill a hole and weld/braze on another fitting - now you can remove the inner filler hose and use the full diameter of the outer filler hose to pump fuel in, and the air will get vented through the top of the tank and that hose that you added. Basically you're creating an external vent for the tank (like many older Chevy and Dodge trucks have), it still vents inside the metal filler neck like factory, only you can pump fuel in faster and in case of a diesel truck you can now use the big-truck pumps at any truck stop. It should be mentioned that to keep things legal you probably need to add a small atmosphere vent somewhere, I've seen people t-ee that off the big vent hose.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.