Fuel Filter Light
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Senior User
Joined: Jan 2007
Posts: 298
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From: Mexico
Fuel Filter Light
1990 F-250 7.3 NA I had to change my fuel filler pipes because the nozzles on the pumps in Mexico are to large to fit. Now that I have that done the fuel filter light comes on only when I use the rear tank. When I switch to the front tank it goes off. I change the filter about 2000 miles ago so it should be clean.
What are some of the reasons that this light comes on?
What are some of the reasons that this light comes on?
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Joined: Jan 2005
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From: Douglas, Georgia
a theory.....
when replacing the tank fillers, the new cap doesn't vent and the tank vent is clogged/kinked. So you are pulling a vacuum on the tank.
try running it with the filler cap off
when replacing the tank fillers, the new cap doesn't vent and the tank vent is clogged/kinked. So you are pulling a vacuum on the tank.
try running it with the filler cap off
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Senior User
Joined: Jan 2007
Posts: 298
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From: Mexico
Fuel Filter Light
Hola,
I tried that and the light still comes on.
What are the reasons that the fuel filter light comes on? Does the light come on due to just a dirty filter or are there other symtoms to cause it to glow?
I tried that and the light still comes on.
What are the reasons that the fuel filter light comes on? Does the light come on due to just a dirty filter or are there other symtoms to cause it to glow?
Originally Posted by DeepRoots
a theory.....
when replacing the tank fillers, the new cap doesn't vent and the tank vent is clogged/kinked. So you are pulling a vacuum on the tank.
try running it with the filler cap off
when replacing the tank fillers, the new cap doesn't vent and the tank vent is clogged/kinked. So you are pulling a vacuum on the tank.
try running it with the filler cap off
Senior User
Joined: Apr 2005
Posts: 392
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From: NC
fuel filter light comes on for restricted fuel filters it comes on when there is a vaccum on the filter, the filter could be getting blocked, or lift pump could be getting weak since it has to work a tad harder to pull fuel from the rear tank, since you changed the filler pipes on the tanks take a look at the fuel lines from the rear tank to the selector valve and see if any are pinched
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Senior User
Joined: Jan 2007
Posts: 298
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From: Mexico
I got the problem fixed. It was a pinched fuel line off the rear tank.
THANKS FOR THE HELP
THANKS FOR THE HELP
Originally Posted by dieself250
fuel filter light comes on for restricted fuel filters it comes on when there is a vaccum on the filter, the filter could be getting blocked, or lift pump could be getting weak since it has to work a tad harder to pull fuel from the rear tank, since you changed the filler pipes on the tanks take a look at the fuel lines from the rear tank to the selector valve and see if any are pinched
