WIF light always coming on... - Ford Powerstroke Diesel Forum
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Old 04-14-2012, 08:16 PM
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WIF light always coming on...

New to me 2008 F250 w/ 6.4 -- 30k miles.

My water in fuel light seems to come on every other day. When it does, I seem to have a loss of power. I always pull over and drain, and got a little water the first time, but recently only get a few small drops, maybe half the size of an eraser head.

Any thoughts? I have an AirDog I, 150gph from my old 6.0 I want to install soon
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Old 04-16-2012, 12:28 PM
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remove the block where the fuel lines go in to the low pressure pump. (4- screws) clean the sh*t out of it. replaced the wif senson and gasket. Drain WIF ever so often. If you have the updated flash from ford the truck is in limited power (limp mode) when light is on
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Old 04-16-2012, 06:10 PM
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The low pressure pump is on the frame rail? That's where the sensor is, correct?
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Old 04-17-2012, 03:51 AM
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Yeah. Sensor is on bottom right. Its a quarter turn to release it. Still a pain to remove. Clean all the sludge out.
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Old 04-17-2012, 04:43 PM
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do u get ur fuel from the same station all the time????

is there a chance you got a bad tank of fuel????

after draining that many times ...you may want to change those filters...

you also have to consider that he WIF sensor has become contaminated a may require replacing...

Last edited by torqueshift; 04-17-2012 at 04:49 PM.
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Old 04-22-2012, 04:46 AM
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UPDATE -- I kept having issues and pulled the HFCM (easy to do-- use a 3/8" and 1/2" fuel line disconnect tool).

I pulled the filter that I had just changed, and cleaned out the housing. It was disgusting! It looked like there was a large piece of fatback, and tons of crud in there. This had to have been my problem. I just bought this this truck with 28k miles on it. I changed the filters the day I got it home and they were in good shape then....

Anyway, if anyone else has this problem try pulling the HFCM and cleaning
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Old 05-02-2012, 03:24 PM
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keep an eye on your lower filter, check it again in about 5,000 miles, if it looks excessively dirty you may have some stuff growing in your tank (algae). if that's the case you may have to drop the tank and clean it out
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