1988 Ford F-150 fuel spewing from neck line

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Old 07-25-2022, 09:29 AM
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Los223
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1988 Ford F-150 fuel spewing from neck line

Fuel is spewing out of my front tank neck line, and coming out where you fill
in gas. I changed the filter valve and hoses and tank. I’m confused on why it’s spewing out.

im driving on the back tank and it’s never spewed before. And I changed the exact same thing. Even when I did drive on the front tank with gas in. But as I started driving on the back tank the front tank spewed out gas.

Why is this happening? is my EGR VALVE bad?

or could a line be crossed?
because I changed the full fuel line. excluding fuel injectors and EGR along wit air filters inside engine
 
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Old 07-30-2022, 12:14 AM
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Looks like you've found your way to the "1987 - 1996 F150 & Larger F-Series Trucks" forum.

Good luck!
 
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Old 12-07-2022, 06:52 PM
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Originally Posted by Los223
Fuel is spewing out of my front tank neck line, and coming out where you fill
in gas. I changed the filter valve and hoses and tank. I’m confused on why it’s spewing out.

im driving on the back tank and it’s never spewed before. And I changed the exact same thing. Even when I did drive on the front tank with gas in. But as I started driving on the back tank the front tank spewed out gas.

Why is this happening? is my EGR VALVE bad?

or could a line be crossed?
because I changed the full fuel line. excluding fuel injectors and EGR along wit air filters inside engine
The EGR valve has nothing to do with this. I would look for the charcoal canister and all the vapor/vacuum lines that go to it as my swag is it canister is full of fuel causing a blockage and/or you have lines that are clogged/kinked/blocked.
 
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Old 12-12-2022, 08:50 PM
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if it wasn't doing this before you changed all the lines my money is you have kinked a line or hose going to tank fill neck
 
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Old 12-13-2022, 06:17 PM
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I'm a little late to the party but Ford had 2 recalls for that very reason. We had to install check valves on both fuel tank lines and replace the fuel pressure regulator. Both times.



That's what the kit we used looked like and it mattered what engine you had as to which kit was used. I seriously doubt you'll be able to find any of those kits still available so the only cure is to pick one of the fuel tanks to use and pinch off the fuel lines going to the other. Sux I know but it is what it is when you drive an antique.
 
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