Notices
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

fuel return question

Thread Tools
 
Search this Thread
 
Old May 20, 2016 | 09:00 PM
  #1  
mark's1984's Avatar
mark's1984
Thread Starter
|
New User
Joined: Mar 2016
Posts: 8
Likes: 0
fuel return question

on a 1984 350 6.9l, replacing the fuel tanks with an auxiliary tank in the bed. what can i do with the fuel return that goes back to the tank? can i tie it into the supply line coming out of the new tank; or does it have to go to the tank?
 
Reply
Old May 20, 2016 | 09:20 PM
  #2  
southern-old-bold's Avatar
southern-old-bold
Senior User
Joined: Aug 2014
Posts: 188
Likes: 0
Originally Posted by mark's1984
on a 1984 350 6.9l, replacing the fuel tanks with an auxiliary tank in the bed. what can i do with the fuel return that goes back to the tank? can i tie it into the supply line coming out of the new tank; or does it have to go to the tank?
Return line must go to the tank. Best to route the line to a low point to avoid foaming and attend to tank venting carefully
 
Reply
Old May 20, 2016 | 10:18 PM
  #3  
Macrobb's Avatar
Macrobb
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
Yeah, there is quite a bit of fuel returned by our fuel system. It's used for lubrication and cooling of the IP and injectors.
 
Reply
Old May 22, 2016 | 07:31 AM
  #4  
mark's1984's Avatar
mark's1984
Thread Starter
|
New User
Joined: Mar 2016
Posts: 8
Likes: 0
you say a low point, will it flow even if it is below the fuel line?
 
Reply
Old May 22, 2016 | 08:02 AM
  #5  
tjc transport's Avatar
tjc transport
i ain't rite
Joined: Mar 2005
Posts: 65,569
Likes: 5,606
From: Marlboro Mental Hospital.
Club FTE Gold Member
when he said low point, he meant to put it back into the tank with the end of the return down at the bottom of the tank so the returned fuel is put straight into the fuel in the tank. if it is at the top of the tank it can aerate the fuel in the tank when it splashes in.
 
Reply
Old May 22, 2016 | 01:53 PM
  #6  
mark's1984's Avatar
mark's1984
Thread Starter
|
New User
Joined: Mar 2016
Posts: 8
Likes: 0
just wanted that clarified; thanks for the info
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
49willard
1948 - 1956 F1, F100 & Larger F-Series Trucks
19
Jun 1, 2023 07:35 AM
ManfredVonRichtofen
1973 - 1979 F-100 & Larger F-Series Trucks
1
Feb 25, 2012 03:40 PM
2danglong
1999 - 2003 7.3L Power Stroke Diesel
11
Apr 28, 2009 08:33 PM
WALJON
1994.5 - 1997 7.3L Power Stroke Diesel
5
Feb 3, 2008 08:16 PM
DNewton
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
2
Jun 21, 2007 08:58 PM




All times are GMT -5. The time now is 08:52 PM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE