hey guys, i've got a 92 f150 302. the rear tank has a leak in it... i thought oh well i'll just let it leak out and then just use the front tank... but somehow fuel keeps getting into the rear tank... is there a line between the two tanks or something? what would i need to do in order to stop fuel from getting into the rear tank from the front tank? thanks for your help

 

Yes you can eliminate the tank, disconnect both fuel lines and plug them, I made some plugs from old engine studs for just this thing.. worked great.

 

ok do i have to drop the tank in order to do this? where should i plug the lines, the ones going to the rear tank?

 

Yer valve is bad as it should not be letting fuel into the tank that is off. Just plugging the line without removing the bad valve may cause problems. I just got a rear tank from ebay for my 87 Ranger for $65.00 plus shipping. Brand new

 

can i just replace the valve? its just leaking pretty bad sitting in my driveway and stinks like gas so i wanna be able to fix it right away...

 

You may or may not have to drop the tank, depends if you can access the lines or not. It may be a good idea to remove it anyway to prevent somebody accidentally filling it.
Plug the lines where they attach to the rear tank, as stated you can easily make semething that will plug into the fuel line with the factory clip, just takes a few minutes with a hack saw and a grinder. Here's apicture of what I mean, you start with a stud like that at the bottom of the pic, cut off the threads on 1 side, and do a little grinding on it so the retainer clip will hold it in place after it's inserted.

 

Yes I would relapse or bypass the valve. If it is sticking partway now it may lock up on the wrong tank, ya won't be able to switch it. I have bypassed the valve by cutting the ford ends off and clamping rubber fuel line between them. Don't use a grinder, use a hack saw if ya do it in the truck

 

where is this valve located? on the rear tank? sorry about so many questions, i just wanna know exactly what i need to do... what does this valve look like?

 

It's on the frame rail by the drivers door on my 87. It's got wires and fuel lines on it and it's not a pump as I have a fuel pump just ahead of it.

 

A '92 doesn't have a valve.. don't bother looking for it.

 

Yes disregard what arctic y block is saying, what he is saying applies to 1985-1989 F-series trucks.
The 1990 on use a very different fuel system as Paul O is saying.

Although I would cut the two fuel lines off as they go into the tank fuel unit (after you remove it from the tank), mash the ends and then braise the ends closed (away from the truck).
But I would remove the tank first.

 

well what i did was remove the tank and then put a hose from one line to the other at the ends... i hope that works fine...

 

You just did away with the fuel pressure regulator.
You will also be too rich to start with about 100 PSI fuel pressure.

 

Your better off just replacing the tank and the tank transfer valve. The transfer valve is directly under the driver's seat mounted to the inside of the frame rail.

Tim

 

As Paul O and I said above he does not have a transfer valve.