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Pickup with knapheide service body hard to put gas in
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CaseIH7240
Posted 9/1/2016 08:35 (#5502908)
Subject: Pickup with knapheide service body hard to put gas in


Ohio
2008 Ford F-350 with a service body is almost impossible to add fuel. It always wants to spit back out the full tube. If you work with it sometimes you can find the right place and it pumps pretty decent. Usually takes me 15-20 minutes to add gas and I'm getting tired of it. Any fixes? Thanks
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1brunel
Posted 9/1/2016 09:37 (#5503000 - in reply to #5502908)
Subject: RE: Pickup with knapheide service body hard to put gas in


w. wi.
We had same problem with a Dodge and a flat bed. Took the ball out of the filler pipe that cured the problem. But the automatic shut off on pumps would always spill. We just held it wide open till you could here it near full.
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boutbrok
Posted 9/1/2016 09:43 (#5503012 - in reply to #5502908)
Subject: RE: Pickup with knapheide service body hard to put gas in


NE Ga
Have '79 F350 with Knapheide flat bed. Tank filler hose is about 4' of twist & turns. Metal & rubber hoses clamped together. Poor design. Takes forever to fill. There is no fall on about 2 feet of the filler hose. Plan is to reroute hose, make it shorter with plenty of fall. Seldom use the truck any more, but it is in great shape. 33K miles
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CaseIH7240
Posted 9/1/2016 09:47 (#5503015 - in reply to #5503000)
Subject: RE: Pickup with knapheide service body hard to put gas in


Ohio
Interesting. I'll have to see if mine has a ball. Was it down at the tank?
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LawrenceWelk
Posted 9/1/2016 09:51 (#5503021 - in reply to #5503015)
Subject: RE: Pickup with knapheide service body hard to put gas in


Strasburg, ND
Drive it up on a block of wood.
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deeretech14
Posted 9/1/2016 10:20 (#5503080 - in reply to #5502908)
Subject: RE: Pickup with knapheide service body hard to put gas in



SW Ohio
Had same problem on one I used work out of. Try turning the gas nozzle upside down. Sounds crazy but it worked for me!
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TMX864
Posted 9/1/2016 10:25 (#5503088 - in reply to #5503080)
Subject: RE: Pickup with knapheide service body hard to put gas in


Michigan
Yes we had same problem. Like other poster said there are corners and areas where there is no fall in the hose. We took it all off and ran a new hose, straight shot to the tank. Works great now. Im sure there is a reason the route the fill line like that originally, but we couldn't figure out why so we changed it to what works.
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CaseIH7240
Posted 9/1/2016 10:57 (#5503138 - in reply to #5503080)
Subject: RE: Pickup with knapheide service body hard to put gas in


Ohio
That's what I normally do. The sweet spot for me was at about 2 o clock. Seemed to pump pretty well there by I am just getting tired of dealing with it. I want to be able to shove the nozzle in and pump in gas without having to fight it.
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ahay68979
Posted 9/1/2016 11:11 (#5503162 - in reply to #5503138)
Subject: RE: Pickup with knapheide service body hard to put gas in


Saronville NE
My pu and service box is same way. Only way it works is basically upside down, then fills right up I have no clue but sure faster so I'll keep doing it.
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Mwiebe
Posted 9/1/2016 12:40 (#5503327 - in reply to #5502908)
Subject: RE: Pickup with knapheide service body hard to put gas in


Marion County, Kansas
Could be the evap system. Is your check engine light on? Might be something
plugged with the tank vent system.
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Iowa_STO
Posted 9/1/2016 12:47 (#5503346 - in reply to #5502908)
Subject: RE: Pickup with knapheide service body hard to put gas in


southern IA
Gas or diesel?

If its gas there is a known problem with the charcoal canisters plugging. Ford issues the TSB listed below on it. Ford even updated the charcoal canister to help with the issue.

https://www.fleet.ford.com/truckbbas/non-html/Q-181.pdf

If its diesel its likely just the routing. Had several diesel superduty trucks from F250-F550 with Knapehide boxes at my previous job. Only time one of them had a problem filling was when the rear spring broke and partially pinched off the fuel fill. The F550s were cab/chassis and had the midship tank. The F250 and F350s were standard frames with the normal 38 gallon tanks.
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MJD02
Posted 9/1/2016 13:49 (#5503430 - in reply to #5503080)
Subject: RE: Pickup with knapheide service body hard to put gas in


West River, SD
deeretech14 - 9/1/2016 10:20

Had same problem on one I used work out of. Try turning the gas nozzle upside down. Sounds crazy but it worked for me!


Agreed. One of the bale bed pickups is a pain, but fills up without trouble if it is upside down.
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1brunel
Posted 9/1/2016 16:35 (#5503595 - in reply to #5503015)
Subject: RE: Pickup with knapheide service body hard to put gas in


w. wi.
The cage and ball are right by where the end of the nozzle stops when all the way in. If I remember right.
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rancherman
Posted 9/1/2016 16:38 (#5503600 - in reply to #5503000)
Subject: RE: Pickup with knapheide service body hard to put gas in



If it has a ball,  it  should be  at the bottom end of the  steel pipe..   and held in with a tripod type plastic retainer.

Last year,  I put on a  flat bed (circle D)  on our   3500,  and    instead of   mounting the  typical  filler neck under the  bed like most... and  cuss that it doesn't work,   I  welded  a  nice  filler  gusset  on the headache rack,  and  put in a  nice  SS  grommet/flange that  holds  the  OEM  filler neck.     Of  course,   I needed to     cut a  hole  in the  deck  where it  drops  down,  but  it's   tucked in  to the extreme  corner of the  flat bed.    4 feet of  multipurpose   hose   connects that  with  2  bends,   about   2 feet of  flat run,  and  finally the  tank.

Fills  like a  charm,  no matter  how fast.

Check your   vent return first!    it might be choked down  for  'safety reasons'... (roll over  device  etc)

       Usually,     'burping'  is  more  not letting  air out of the tank,   rather that  putting in liquid too fast. 

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