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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 issues

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Old May 27, 2015 | 11:27 AM
  #1  
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From: lost in WI
My 93 f150 5.0 has been having issues now since I drove it over the winter the front tank seems to make the truck stumble and when I hit the gas while in drive it sputters.....the rear tank works fine no stumbles or anything ....I also found fuel in the vapor canister and it smells while driving ....any help would be great
 
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Old May 27, 2015 | 01:57 PM
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White 97 xlt
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From: Cleveland, TN
Just a wild guess, but it sounds like the front fuel pump is getting weak.. A fuel pressure gauge will tell the story...If you don't have one, borrow/rent one from an auto parts store..

I wonder if you have a fuel transfer problem with the front FDM, and the tank is over filling and getting into the vapor line...
 
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Old May 27, 2015 | 02:57 PM
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Yea it whines loud but it just ain't working like it should I kinda figured the valve was bad where is it located on my truck its an extended cab
 
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Old May 27, 2015 | 03:21 PM
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Originally Posted by rockin300
Yea it whines loud but it just ain't working like it should I kinda figured the valve was bad where is it located on my truck its an extended cab
The high pressure check valve is part of the Fuel Delivery Module (FDM) inside the tank(s):

courtesy of subford
 
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Old May 27, 2015 | 03:47 PM
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Ohhhhh does that affect the back leaking into the front
 
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Old May 27, 2015 | 04:36 PM
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Originally Posted by rockin300
Ohhhhh does that affect the back leaking into the front

Yes it does........VERY common problem on these trucks.
 
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Old May 27, 2015 | 04:39 PM
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Well thanks guys I'll get that changed
 
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