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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Fuel transferring

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Old Mar 13, 2012 | 08:42 AM
  #1  
wycowboy63's Avatar
wycowboy63
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From: Sheridan, Wyoming
Fuel transferring

Hello again. Been a while since I have been to the site. I just sold a 77 F150 4x4 and acquired an 88 F150 5.0 4x4 to compliment the 90 F150 5.8 4x4 I already have. The previous owner told me not to fill both tanks at once and to run on the front tank only. He said that if I fill the back tank and run on it that it will transfer fuel to the front tank. I am thinking that the fuel selector valve is the culprit, that the fuel return side isn't completely switching over. I can get a new valve pretty cheaply (I work at O'Reilly Auto Parts, gotta love a discount, lol) so price isn't too much of an issue. Am I on the right track here or is it something else? Thanks for all help on this issue!

Chris
 
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Old Mar 13, 2012 | 09:49 AM
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White 97 xlt
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Sounds like you have it pretty much covered.. The valve on the frame is sure easier than replacing a FDM in the tank on the later model trucks with the transfer problem..
 
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Old Mar 13, 2012 | 09:58 AM
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As long as you're talking about the '88 you're right, the '90 doesn't have that valve.
 
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Old Mar 14, 2012 | 04:08 PM
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It's the 88 I am talking about. Thanks ya'll!

Chris
 
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Old Mar 14, 2012 | 10:39 PM
  #5  
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From: Grants Pass, OR
Originally Posted by wycowboy63
Hello again. Been a while since I have been to the site. I just sold a 77 F150 4x4 and acquired an 88 F150 5.0 4x4 to compliment the 90 F150 5.8 4x4 I already have. The previous owner told me not to fill both tanks at once and to run on the front tank only. He said that if I fill the back tank and run on it that it will transfer fuel to the front tank. I am thinking that the fuel selector valve is the culprit, that the fuel return side isn't completely switching over. I can get a new valve pretty cheaply (I work at O'Reilly Auto Parts, gotta love a discount, lol) so price isn't too much of an issue. Am I on the right track here or is it something else? Thanks for all help on this issue!

Chris
I think the original style non electric switching valve is a dealer only item.
When I look at O'Reilly, Autozone, Napa etc sites, they only show the aftermarket electric type.
I put one on my '86 and it works well but was quite a bit of work getting it installed.
I have detailed writeup here:
http://75.95.181.105:86/F150/86F150.html
 
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