fuel tank filler neck problems, Help! - Ford Truck Enthusiasts Forums



1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

fuel tank filler neck problems, Help!

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 10-21-2012, 12:40 AM
muddyoldford's Avatar
muddyoldford muddyoldford is offline
New User
Thread Starter
 
Join Date: Oct 2012
Posts: 12
muddyoldford is starting off with a positive reputation.
Question fuel tank filler neck problems, Help!

I have an 86 f150 i300 longbed pickup. since i bought the truck i cant get gas to flow into the tank at a decent pace. i can only go about half speed and takes forever to put gas in the truck. I understand it maybe a vent problem? Im not sure but id like to just replace the entire neck strait into the tank. Ive tried taking the old filler neck out but it wont come out. is there some kind of crimp on the inner hose? can someone explain how to make a filler neck swap? thanks
Reply With Quote
  #2  
Old 10-21-2012, 07:51 AM
Franklin2's Avatar
Franklin2 Franklin2 is offline
Moderator
 
Join Date: Jan 2001
Location: New Market, VA
Posts: 39,645
Franklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant future
Take the hose clamps loose going to the tank, take the 3 screws out of the bed around where you put the nozzle when filling, and then whole assembly will come out.

You will find a smaller pipe inside the larger rubber pipe. If you look down the filler hole you will see a spot where the smaller inside pipe is held in place, Make sure the smaller pipe is present and in the correct position in the holder in the neck.

The inner hose can get out of place, and cause the fuel from the station hose to splash back and cause the filler gun to cut off. It's purpose is to keep all the air coming out of the tank when you are filling, separated from the fuel going in. If this hose is missing or out of place, it can cause "gurgling" and pockets of air coming up out of the tank when filling will throw fuel backwards at the station gun and make it cut off.
Reply With Quote
  #3  
Old 10-21-2012, 08:02 AM
joshofalltrades joshofalltrades is offline
Postmaster
 
Join Date: Feb 2011
Posts: 3,555
joshofalltrades has a good reputation on FTE.joshofalltrades has a good reputation on FTE.
even like an old radiator hose, you sometimes have to insert a screwdriver or other tool between the hose and the pipe to break the connection between rubber and steel. once you've worked it loose, it'll come right out as franklin described
Reply With Quote
  #4  
Old 10-21-2012, 10:02 AM
EL_JEFE32's Avatar
EL_JEFE32 EL_JEFE32 is offline
Junior User
 
Join Date: Mar 2012
Location: El Paso
Posts: 95
EL_JEFE32 is starting off with a positive reputation.
Quote:
Originally Posted by muddyoldford View Post
I have an 86 f150 i300 longbed pickup. since i bought the truck i cant get gas to flow into the tank at a decent pace. i can only go about half speed and takes forever to put gas in the truck. I understand it maybe a vent problem? Im not sure but id like to just replace the entire neck strait into the tank. Ive tried taking the old filler neck out but it wont come out. is there some kind of crimp on the inner hose? can someone explain how to make a filler neck swap? thanks
Oh I remember the days of filling my truck a dime at a time. Ten cents of gas gurgle ten cents of gas gurgle. Took me fifteen minutes to put in 5 gallon. Mine was a small break in the vent and i had to pry mine off like was said already. Works fine ever since as long as everything goes back in the right hole and stays put. The inner hose if stock is just a plastic type vent that doesn't dissolve with fuel if its stock.
Reply With Quote
  #5  
Old 10-21-2012, 10:38 AM
muddyoldford's Avatar
muddyoldford muddyoldford is offline
New User
Thread Starter
 
Join Date: Oct 2012
Posts: 12
muddyoldford is starting off with a positive reputation.
thanks guys! your alot of help! but i have another question. if i remove the filler neck am i going to have trouble putting it back into the tank? there isnt alot of working room in there
Reply With Quote
  #6  
Old 10-21-2012, 04:13 PM
Franklin2's Avatar
Franklin2 Franklin2 is offline
Moderator
 
Join Date: Jan 2001
Location: New Market, VA
Posts: 39,645
Franklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant future
It will go. I somehow did it as did the others, but I don't remember any of the fine details.
Reply With Quote
  #7  
Old 10-21-2012, 04:32 PM
81-F-150-Explorer 81-F-150-Explorer is offline
Post Fiend
 
Join Date: Jul 2004
Location: Northern California
Posts: 8,791
81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold
I had to drop my rear tank to get the inner plastic tube back into it's "holder" in the tank.

I call it a holder for lack of a better word...

There is a "holder" on the tank side, and one on the filler neck that the plastic tubes slide into. This holds the tube up off the bottom of the filler neck and hose.

These plastic tubes can get damaged or dislodged from it's "holders" if someone siphons your gas.

The filler neck will slide into the filler hose, and the plastic tube will slide right into it's holder built into the neck without dropping the tank. The problem and why I had to drop the tank is the plastic tube came loose from the tank side and no way to reach that end with the tank in place.
Reply With Quote
  #8  
Old 10-21-2012, 04:40 PM
muddyoldford's Avatar
muddyoldford muddyoldford is offline
New User
Thread Starter
 
Join Date: Oct 2012
Posts: 12
muddyoldford is starting off with a positive reputation.
thanks everyone, im going to try to take it out, ill reply with any problems
Reply With Quote
  #9  
Old 10-21-2012, 05:18 PM
86fordtruck's Avatar
86fordtruck 86fordtruck is offline
Elder User
 
Join Date: Oct 2009
Location: Jonesborough, TN
Posts: 721
86fordtruck has a good reputation on FTE.86fordtruck has a good reputation on FTE.86fordtruck has a good reputation on FTE.
While we are on the subject, is there a source for a replacement for the vent tube. Mine was damaged when I removed the tank as part of my disassembly. I am relocating the filler, but still need the vent to work.
Reply With Quote
  #10  
Old 10-21-2012, 07:56 PM
muddyoldford's Avatar
muddyoldford muddyoldford is offline
New User
Thread Starter
 
Join Date: Oct 2012
Posts: 12
muddyoldford is starting off with a positive reputation.
im not sure what you mean. youre replacing your filler? i dont know too much about the tank on these trucks, im sure franklin could help you out

btw i found the problem with my filler neck. someone had it apart not to long ago and has the hose cut about half way to the tank and spliced another smaller hose into the like cutting the fuel flow way back...guess im going to have to make a trip to the junk yard
Reply With Quote
  #11  
Old 10-21-2012, 08:18 PM
86fordtruck's Avatar
86fordtruck 86fordtruck is offline
Elder User
 
Join Date: Oct 2009
Location: Jonesborough, TN
Posts: 721
86fordtruck has a good reputation on FTE.86fordtruck has a good reputation on FTE.86fordtruck has a good reputation on FTE.
Not replacing the filler, just moving it. I moved the fuel tank from the midship just inside the frame, to behind the rear axle, and am moving my fuel filler from the door on the side of the bed to behind the driver side taillight. I am afraid I may have to head to the local junkyard, as well, if I can't find an inexpensive replacement.
Reply With Quote
  #12  
Old 10-21-2012, 08:21 PM
muddyoldford's Avatar
muddyoldford muddyoldford is offline
New User
Thread Starter
 
Join Date: Oct 2012
Posts: 12
muddyoldford is starting off with a positive reputation.
ive looked and looked and all i can find is very expensive replacement filler necks. i think the junk yard is the best bet
Reply With Quote
  #13  
Old 10-21-2012, 08:40 PM
Franklin2's Avatar
Franklin2 Franklin2 is offline
Moderator
 
Join Date: Jan 2001
Location: New Market, VA
Posts: 39,645
Franklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant future
Or a muffler shop might be able to bend a piece of pipe for you to use? Don't know about the smaller inside pipe though.
Reply With Quote
  #14  
Old 10-22-2012, 04:21 PM
86fn150's Avatar
86fn150 86fn150 is offline
Senior User
 
Join Date: Oct 2006
Location: north battleford
Posts: 215
86fn150 is starting off with a positive reputation.
swap to 87 and up style .world of difference.way faster.only mod is to get rid of inner holder in tank neck for the old vent as this style is reversed

Reply With Quote
  #15  
Old 10-22-2012, 07:16 PM
muddyoldford's Avatar
muddyoldford muddyoldford is offline
New User
Thread Starter
 
Join Date: Oct 2012
Posts: 12
muddyoldford is starting off with a positive reputation.
mine is like the 87 and up filler but it has another hose spliced into it
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
How hard is it to drop gas tank ugh3012 1999 to 2016 Super Duty 7 02-06-2016 05:35 PM
Filler neck hose mv7fd Pre-Power Stroke Diesel (7.3L IDI & 6.9L) 17 01-07-2016 12:55 PM
Filler Neck Midship rwlarson Fuel Injection, Carburetion & Fuel System 0 12-10-2015 02:24 PM
Rear filler neck and hose... UGHHHHH smashclash 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 24 10-14-2015 01:31 PM
Flat bed gas tank filler neck problem? Andrew7dg 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 0 11-29-2011 10:44 AM


Go Back   Ford Truck Enthusiasts Forums >

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 10:22 PM.