Cant fill gas tanks
08-08-2013, 08:02 PM
#21
1989 F150 4.9/300 5 speed
Join Date: Jul 2011
Location: Raleigh, NC, USA
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I have an 89 f150 and I had to buy a front tank when I got the truck, when I got it I noticed that the filler hole, were the hose conects to the tank, had tthe big hole like normal and then inside that hole it a smaller hole that I guess the inside tumbe was sapose to go in. The inside tube wouldn't fit in it so I just didn't worry about it and I put the tank in, when I tried to fill it up it did exactly like ur saying. If I ever get time ill ccut it out and see what happens, have your tanks been replaced?
08-23-2013, 01:50 PM
#22
1989 F150 4.9/300 5 speed
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Fixed!!!
I drilled vent holes like the others and re-routed my filler hose in a way to ensure it wasn't kinked. Now, instead of 5 minutes per gallon at the pump, I can pump it as fast as the pump will allow. I'm going to make my own thread with video so I don't hijack this one.
09-15-2014, 10:26 AM
#23
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81 Ford F-100
I have read through these posts earlier before I finally figured out why my 81 F-100 was slow to fill.
I had removed the rear tank to switch out the sending unit and replaced the tank back on to the filler neck hose in the truck being careful to get the inner plastic tube guided back into the tank that is in the fill neck. After bolting every thing in to place I went to gas station to fill it up. That's when I had an immediate filling problem I hadn't had before. The fuel nozzle at the station kept clicking off and would barely take a trickle. So I figured I kinked the hose.
Got back home and immediately dropped the fuel tank again. Further inspection I saw that the tank side of the fill hose port has a framed guide that the inner plastic fill tube has to fit into just like the nozzle side of the fill hose port. You can see this by taking the big black hose off of the tank and looking in the neck that is on the tank. The inner small plastic tube has to be inserted in these guides or it will never fill right.
When I put mine back together the second time, I inserted the small plastic inner tube into the tank guide on the tank side of the fill port, put the outer black rubber hose back onto the tank over this tube, installed hose the clamp, then shoved a rag tight in the black rubber hose to hold the plastic tube securely while I worked the tank back up into the truck. (I also had removed the fill neck mounted to the truck).
After the tank was in place and I was ready to install the filler neck. I carefully pulled the rag out of the tank side of the fill-port while holding the plastic tube in place. then I could take the filler neck and guide that same tube into it's guides on the filler neck and install it back onto the truck.
After that the truck filled normally like it was suppose to. Hope this helps!
I have read through these posts earlier before I finally figured out why my 81 F-100 was slow to fill.
I had removed the rear tank to switch out the sending unit and replaced the tank back on to the filler neck hose in the truck being careful to get the inner plastic tube guided back into the tank that is in the fill neck. After bolting every thing in to place I went to gas station to fill it up. That's when I had an immediate filling problem I hadn't had before. The fuel nozzle at the station kept clicking off and would barely take a trickle. So I figured I kinked the hose.
Got back home and immediately dropped the fuel tank again. Further inspection I saw that the tank side of the fill hose port has a framed guide that the inner plastic fill tube has to fit into just like the nozzle side of the fill hose port. You can see this by taking the big black hose off of the tank and looking in the neck that is on the tank. The inner small plastic tube has to be inserted in these guides or it will never fill right.
When I put mine back together the second time, I inserted the small plastic inner tube into the tank guide on the tank side of the fill port, put the outer black rubber hose back onto the tank over this tube, installed hose the clamp, then shoved a rag tight in the black rubber hose to hold the plastic tube securely while I worked the tank back up into the truck. (I also had removed the fill neck mounted to the truck).
After the tank was in place and I was ready to install the filler neck. I carefully pulled the rag out of the tank side of the fill-port while holding the plastic tube in place. then I could take the filler neck and guide that same tube into it's guides on the filler neck and install it back onto the truck.
After that the truck filled normally like it was suppose to. Hope this helps!
Last edited by rhol55; 09-15-2014 at 10:46 AM.
09-16-2014, 07:17 AM
#25
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Yes, I can definitely see why it would be easier to pull the bed off and open every thing up to get to the tanks. My particular situation is I have a camper sitting on the truck and we have scheduled one more camping trip and front end alignment (with camper on) before I take it off the truck this year. Being good weather and my shop is in the gravel driveway I needed to get the work done now or wait till next year.
Also with the tank out the second time I did have a couple gallons of fuel that did get trickled in at the gas station, so I poured the fuel out on the second removal in a 5 gallon bucket. The gas carried out sandy residue and some dirt that was laying on the bottom, so in effect I guess it was good it got "rinsed out" while it was out of the truck.
I also wanted to add, when removing the tank on a vehicle as old as mine (30+ years) it is also a good idea to replace the rubber vapor vent valve grommet that seals the valve on top of the tank (if applicable). I have ordered one for my truck and will replace it at a later date because of a fuel smell now after filling and minor leak when tank is full. Removing the valve from the grommet is a lot easier than trying to work the hose off it after many years, but removing the valve the grommet breaks a seal and looses it's sealing properties...
yes and to quote Chris_1 "Another example of why I like to take the box off to work on the fuel tanks"
Also with the tank out the second time I did have a couple gallons of fuel that did get trickled in at the gas station, so I poured the fuel out on the second removal in a 5 gallon bucket. The gas carried out sandy residue and some dirt that was laying on the bottom, so in effect I guess it was good it got "rinsed out" while it was out of the truck.
I also wanted to add, when removing the tank on a vehicle as old as mine (30+ years) it is also a good idea to replace the rubber vapor vent valve grommet that seals the valve on top of the tank (if applicable). I have ordered one for my truck and will replace it at a later date because of a fuel smell now after filling and minor leak when tank is full. Removing the valve from the grommet is a lot easier than trying to work the hose off it after many years, but removing the valve the grommet breaks a seal and looses it's sealing properties...
yes and to quote Chris_1 "Another example of why I like to take the box off to work on the fuel tanks"
Last edited by rhol55; 09-16-2014 at 07:36 AM.
09-16-2014, 10:52 PM
#26
It's weird how things like this come up in bunches but I am now having this problem too. My truck was dead empty in both tanks when I bought it. In fact when I went on about a 10 mile drive and switched to the other tank and it read no gas I about panicked. I went to a gas station right up the road after I bought it and put about 7 gallons in the front tank before I checked the gauge and it still read no gas. Well I kicked myself b/c I wasn't sure the pump worked so I put gas in the back tank and then thought I could tell the pump on both was working.
Then today I went to put gas in the front dead gauge tank and after about 5 gallons it stopped. I tried 4 or 5 times and it kept "topping off". I thought maybe the guy who put on my springs and did an alignment put some gas in it b/c he had it a month said it drove it probably 75 miles or so. I don't know if he did or not but I think it's just not filling right b/c it had almost no gas in that tank when I gave it to him. I know it probably needs a new sending unit to get the gauge working so at least that one I can fix two problems at once. Good read and thanks for the advice everyone. I'm just hoping this is a one time fluke or it is full. Only time will tell as you all know it doesn't take long to run gas through these old things.
Somebody mentioned a slow front pump. Is it that bad? My truck is pretty solid and well maintained but is it worth it to replace the pump while I'm in there too on a 21 year old truck?
Then today I went to put gas in the front dead gauge tank and after about 5 gallons it stopped. I tried 4 or 5 times and it kept "topping off". I thought maybe the guy who put on my springs and did an alignment put some gas in it b/c he had it a month said it drove it probably 75 miles or so. I don't know if he did or not but I think it's just not filling right b/c it had almost no gas in that tank when I gave it to him. I know it probably needs a new sending unit to get the gauge working so at least that one I can fix two problems at once. Good read and thanks for the advice everyone. I'm just hoping this is a one time fluke or it is full. Only time will tell as you all know it doesn't take long to run gas through these old things.
Somebody mentioned a slow front pump. Is it that bad? My truck is pretty solid and well maintained but is it worth it to replace the pump while I'm in there too on a 21 year old truck?
Last edited by choate; 09-16-2014 at 10:55 PM.