Question about 1986 Ford F 250

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Ford f150 1984 fuel transfer problem

Rear tank works front tank stalls engine after about mile

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Check to see if you have more then one fuel filter for your truck it maybe a bad fuel filter try these websites www.autozone.com and www.alldatadiy.com to see if you can get more information and diagrams and pictures at the same time.

Posted on Jul 30, 2009

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Posted on Jan 02, 2017

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My aux tank valve will not change from front to back, fuses are good , switch works good . engine stalls when I move dash switch from rear tank to front. but if I flip back real quick, it gets fuel and is...


Check your fuel pump in the front tank. The fact that it begins to stall - tells me that the valve is actually working - the front fuel pump just isn't pump fuel.

May 26, 2011 | Ford F-250 Cars & Trucks

1 Answer

I have a 95 ford f150m eddie bauer series, i always used the front tank, on long drive's i would switch, over, one day after use, i park it, next morn, it would not start, i switch over to the rear, no...


it may have a seperate pump for the seprate tanks im not sure. it acts to me like its running thaose few miles on fuel left in lines from the back tank. i would start by selcting the frount tank when you put it to bed one night, then in morning have some one turn the key while you listen for a fuel pump if i didnt hera one i would start there. if i heard one check for a seperate fuel filter for the frount tank then check for pluged lines between the two tanks. it has to be someting simple. good luck.

Mar 21, 2011 | 1995 Ford F150 Styleside Regular Cab

2 Answers

Front fuel tank not working properly


Your truck has a mechanical switch that may not be working. Check it for power and ground.

One of the problems with 2 tanks is a lot of folks only run off of one and then you can get a sludge build up and could have a plugged pick up line.
Try this remove the fuel cap for the front tank.
Disconnect the front tank fuel line from the switch valve.
If you are not getting a good flow of fuel using low pressure air no more than 25 to 40 PSI blow back into the tank.
Now do you have fuel flow?
Your switch valve may be plugged on the front tank side - If you are getting fuel to the switch valve and not through it I would replace the valve.
You may also have a bad dash switch
Hope this helps Please leave a testimonial if it does
Thanks
Scott

Mar 11, 2010 | 1982 Ford F 250

1 Answer

85 E350 Ford not switching from Fnt to RR fuel tank


85 ford 350 econoline van with 460 engine and duel tanks, lost prime on both tanks, cannot get gas up to inlet on carb, it happen after having shot work on vaccum lines, i can't hear the pumps in the tanks making a buzzing noise, i hear a click when i switch from front tank to the rear tank , somewhere under the hood, on the driver side front fender, what is the next step.

Jun 26, 2009 | 1985 Ford Econoline

1 Answer

Vehicle will not start after stalling, however it will turn over


check the inertia (fuel cut off) switch 1st- it's either in the kick plate on the pass. front or in the trunk. seen a few of them go, have someone hold the button dow while you start the car.

May 08, 2009 | Ford Freestyle Cars & Trucks

1 Answer

F150 dual fuel tank problem


I have to say i'm only guessing, but it sounds like the valve that switches the flow of gas from one tank to the other must be sticking part way open, or bypassing or something, and anything your engine doesn't require, is being returned to the front tank, instead of the rear.

Apr 25, 2009 | 1987 Ford F 150

1 Answer

Dual tank only runs on one tank


there is an electric valve that switches from one tank to the other. it switches the gauge too. It is malfunctioning and pumping fuel from one tank to the other instead of the engine. I think there wa a recall for this. Call any Ford dealer and give him your 17 digit VIN # and they can check for open recalls. Recalls never expire and the dealer will repair for free if there is a recall.
good luck

Jan 08, 2009 | 1990 Ford F150

1 Answer

Rear tank full and selected for use but draws from the front


hi your symptoms suggest that you have slight blockage either in fuel line or most likely at point where rear tank fuel line enters the switch over reason ? you say runs ok on rear tank at 55mph? but when demand for more fuel / speed above that pump /engine cannot deliver ? due to narrowing of fuel line (tuberculation) so check flow from r/tank and for any debri inside?

Nov 20, 2008 | 1989 Ford F 250

2 Answers

F 250 WONT STAY ON


If your front tank was much less than 1/2 full you may have a bad pump in the front tank. each tank has a low pressure pump that feeds the high pressure pump on the frame rail. If the pump in the tank is bad, the high pressure pump will draw gas from the tank (especially the front tank) until the tank get below 1/2 full then it loses its prime and the engine will stall. Try disconnecting the electrical connection at the high pressure pump on the rail and then cycle the key on and off and see if you can detect the tank pump running or not.

Oct 12, 2008 | 1989 Ford F 250

2 Answers

Stalls / Dies / dead


this engine fuel pump prassurae low. it fuel pump celan. Your problem sovel

Jul 13, 2008 | 2003 Ford E150

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