Duel tank problems
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Senior User
Joined: Oct 2005
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From: Berlin, CT USA
Duel tank problems
Ok lets give it go eh, I got a 1997 f250 HD 5.8 v8 351w duel tanks. Ok when my front tank is in use it dumps gas into the rear tank and when the rear tank is in use it dumps gas into the front tank, i have noticed a bit of a drag when i punch the gas from a stop light, it just doesnt haul a** like it used to. I have no check engine light I do regular maintence and i only use mobil 89. This is becomming a danger i forgot to switch tanks to empty one and the front overfilled the rear tank and i lost bout a gal of gas out the back. I changed the filter recently but no change.
Mountain Pass
Joined: Jan 2002
Posts: 213
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From: Aston Pa USA
There is a TSB and possibly a recall on this.
I'm not sure about the 97's, but on my 91 they use a check valve on each fuel pump to prevent the fuel from back flowing into the other tank.
You're going to have to drop both tanks and change the fuel pumps.
Unless you can get Ford to do the TSB repair......
I'm not sure about the 97's, but on my 91 they use a check valve on each fuel pump to prevent the fuel from back flowing into the other tank.
You're going to have to drop both tanks and change the fuel pumps.
Unless you can get Ford to do the TSB repair......
Postmaster
Joined: Nov 2006
Posts: 4,517
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From: SE Wyoming
There was a recall but I think it only lasted 10 years/150K miles.
Guess it is 12 years:
https://www.ford-trucks.com/recalls/...y-1992/t-38387
Guess it is 12 years:
https://www.ford-trucks.com/recalls/...y-1992/t-38387
Postmaster
Joined: Nov 2006
Posts: 4,517
Likes: 3
From: SE Wyoming
Technical Service Bulletin, Ford keeps a data base of common problems so techs can easily access known problems and fix them faster. They should not be confused with recall's that are paid for by Ford, TSB's are not free repairs.
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Senior User
Joined: Oct 2005
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From: Berlin, CT USA
well that freakin sucks, i priced out 2 pumps totall cost $350 jesus christ. Well i thank you guys for the info and if some how i come up with some solution ill post it lol.
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Mountain Pass
Joined: Jan 2002
Posts: 213
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From: Aston Pa USA
Try J.C. Whitney.
I got a pump for my 91 and I've had no problems.
That said, Fords seem to be picky about fuel pumps on the FI motors.
I had no problems with the 91 F250, but I put a generic pump on the wifey's Taurus and it lasted about a month......
I got a pump for my 91 and I've had no problems.
That said, Fords seem to be picky about fuel pumps on the FI motors.
I had no problems with the 91 F250, but I put a generic pump on the wifey's Taurus and it lasted about a month......
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Postmaster
Joined: Nov 2006
Posts: 4,517
Likes: 3
From: SE Wyoming
Tell me about it, I have a '92 sitting because it needs 2 pumps and at least 1 tank, might as well replace the other tank while I have it all out.
Mountain Pass
Joined: Jan 2002
Posts: 213
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From: Aston Pa USA
On my 91, the 2 fuel lines are connected together with a "Y" shaped fitting. That's the reason for the check valves.
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