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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

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Old May 10, 2016 | 11:13 AM
  #16  
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rmcline4
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Question 3: If I were to leave the FSV in the fuel circuit(maintain reservoir) and install two electric fuel solenoids on the fuel tank return lines to prevent the return fuel from going to the wrong tank? I could then remove the bypass valve? Would this fix my problem? Or is my understanding of the system logic flawed?
 
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Old May 10, 2016 | 12:21 PM
  #17  
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subford
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From: Easton,Ks
Originally Posted by rmcline4
My first question: this ring's function is a seal? So replacing this with an appropriate size O-ring would suffice?
I think the O-ring you speak of is to keep the fuel from going down to valve area. In other words these O-rings is part of the sealing of the bottom chamber of the diaphragm.

Replacing the right size O-ring would be the thing to do.
Originally Posted by rmcline4
Second question: The problem is actually the blue O-rings on the shaft of the valve and these need to be replaced?
If these O-ring get sticky they can stick on the shafs and cause the fuel to return to the wrong tank.
Originally Posted by rmcline4
Question 3: If I were to leave the FSV in the fuel circuit(maintain reservoir) and install two electric fuel solenoids on the fuel tank return lines to prevent the return fuel from going to the wrong tank?
Might work but it would be a lost less work just to replace the FSV.
 
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