I have a F150 Ford 1996, (six cylinder, engine I believe is 4.9) dual gas tank the rear tank works fine but if I switch to front tank it shuts off like it is not getting gas. What needs to be replaced? Rance

the return line is to the front tank
relocate it to the rear tank or install a balance pipe between tanks

fuel pump in 1st yank could be out

For the 4.2L:
Firing Order:
1-4-2-5-3-6
Cylinders:
3----------6
2----------5
1----------4
(Front of Vehicle)


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might be **** in the filter m8 sucked it up from the bottom of the tank, they dont tend to like it!! jezza

It could be electrical. Try testing the fuel pump relay. Sounds like it may be going out. Ford had problems with fuel pump relays in the mid 90's.

You may have run out of gas in the front tank, but the gauge may have been reading the rear tank or the front sender is stuck. Is the fuel line switched electrically or manually controlled? How are the gauge connections switched?

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.

your truck is a 4.9L, make sure you have power to the front tank fuel pump. is the power to the pump is ok and you can hear the pump run for a second or two when you key the vehicle on... replace the fuel tank selector valve

Just in front of the side tank is the selector.Very common problem.The rear fuel tanks pump quits.

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There is no selector valve on a 1995 ford f150 300 engine. The selector switch on the dash sends power to the pump in the selected tank. The pump then sends fuel to the engine. If engine won't run on the selected switch, the pump in that tank needs replaced.