Gas leaking from my tank switch

SOURCE: brake line behind fuel tank leaking

If the line leaking is plastic then it's not a brake line it's a fuel line. If the truck runs then it is most likely the return fuel line. If you can't get to it without dropping the tank then that's what you'll have to do, but you shouldn't need to remove it completely.
It is best to siphon out as much gas as possible. Before you removing the bolts take 2 pcs. of smooth fence wire or even 12ga. copper wire and make a cradle to support the tank, cut the wire at least 2 ft. longer than what it will take to go from the frame to the drive-shaft.
At a point about 1/3 in from each end of the tank lupe one end of the wire through holes in the frame and twist it a couple of times, then run it under the tank and around the drive shaft and twisting the ends a couple of turns.
After you get all the bolts out of the tank supports if you don't have room to repair the line you can loosen the wires around the drive-shaft and allow the tank to drop down some[this is why you need the wires 2 ft. longer]
After the repairs which will probably be replacing the rubber fuel hose that attaches the line to the tank,[I'd replace both of them] tighten the wires around the drive-shaft and replace the tank bolts. Remember to get all your bolts started before you tighten any,

SOURCE: front fuel tank will not work

You have duel tanks with a fuel pump in each tank. You also have a fuel pump on the frame rail after the "tank selector". This device only holds a fuel filter that protects the main fuel pump. When you select front or rear tank on the dash, you are selecting which in tank fuel pump will operate. You can check the in tank fuel pump by listening for it to "humm" when the key is turned on..The in tank pumps only feed the main pump and cannot run the engine on their own. Hope this helps

SOURCE: I have a 1988 Ford F250 with the 460 engine and

The fuel pump relay and the oil pressure switch as well. The oil pressure switch runs power to the fuel pump when you first start it
When the oil pressure reaches operating range the relay takes over
They are both inexpensive so replace both of these parts to be safe and kill two birds with one stone. If one goes out the other will soon enough

SOURCE: Replacing leaking transmission cooler lines under front bumper

There is no pressure when the engine is off. You don't have to do anything as far as putting pressure back in other than starting the engine.
Not knowing whats leaking and if its actually the lines then go get a replacement either at the parts house or the dealer.

!!! Why mickey mouse it. ???

Testimonial: "That makes total sense and I thank you very much I have a great mechanic but the only problem is they want to get paid and we are broke!"

ZJ Limited

• 17989 Answers
• Posted on Feb 28, 2011

SOURCE: I have a 1990 Ford

Sound like your fuel tank selector valve is bad.it's located on the frame rail between the tanks and the filter.

Also, keep in mind that the rear in tank pump is bad. The dual function reservoir is mechanical. The pressure from the in tank pump switches the mechanical valves; the dual function reservoir serves two purposes:
1. Mechanical Selector valve for the tanks.
2. Holds extra fuel in the reservoir so if the gas tank is low on fuel and you go around a turn and the low pressure pump can't pump any fuel, the high pressure pump can still draw fuel from the reservoir.

Read this thread which explains how to test the in tank pumps: ford-trucks/88-5-0-no-start-fuel.

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