Fuel/Water Separater
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New User
Joined: May 2015
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Fuel/Water Separater
I'm constantly getting the "Drain Water Separater". I also constantly drain it and just changed the fuel filters and about 3-4 miles I got the warning again. A couple questions, when I drain it the stream never stops and I'm getting NO water, is this ok if it does not stop draining? And, is it difficult to replace the sensor and if anyone has done it can you step me through it please? Thanks
Cargo Master
Joined: Nov 2005
Posts: 2,766
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From: East Tawas, MI
Yes it will drain and drain and drain. Make sure after draining that your cycling the key 4 to 5 times to key on and not run to get the air out.
You may want to disconnect the neg battery cables overnight to clear up the communications from the sensor to the pcm.
Easy things first.
I see your a new member and we welcome you. It helps us to know mileage, use, mods, and current maintenance before the proble surfaced.
Highest regards!!
Denny
You may want to disconnect the neg battery cables overnight to clear up the communications from the sensor to the pcm.
Easy things first.
I see your a new member and we welcome you. It helps us to know mileage, use, mods, and current maintenance before the proble surfaced.
Highest regards!!
Denny
Senior User
Joined: Mar 2004
Posts: 112
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From: Shenandoah Valley in Va
I had the same problem recently. Kept getting the water in fuel along with the "wrench" and then it de-fueled too. Turned out it was the sensor on the water/fuel separator was bad. Not too hard of a fix, part comes with decent directions. Took about 25 minutes to change it out. Follow the directions closely! Hope this helps.
Hotshot
Joined: Jul 2013
Posts: 14,266
Likes: 2,187
before I installed the air dog, I ran into this problem...repeated "drain seperator" with no resulting water.
I put a 6 inch teflon hose on the drain
then I used an oil dip stick drain pump to see what I coud suck out.....pumped it up a few times ...and some gunk came out.
after that, no more erratic "drain seperator" with no resulting water.
I put a 6 inch teflon hose on the drain
then I used an oil dip stick drain pump to see what I coud suck out.....pumped it up a few times ...and some gunk came out.
after that, no more erratic "drain seperator" with no resulting water.
Senior User
Joined: Apr 2017
Posts: 343
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From: Houston, TX
I can tell you I drain my separator once a month and I always get a little water/particulate out of it. You have to let the fuel/water settle so that it can separate, otherwise you won't see any water and think you're not getting any. I usually drain just shy of 2 cups before the stream stops. I've only had it keep draining on me once...and I think it was because I had a full tank of fuel.
I've never had a dash light related to fuel in water.
I've never had a dash light related to fuel in water.
New User
Joined: Jul 2018
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HELP!!
08 F250 6.4
VEHICLE HAD TRANSMISSION REPLACED- LESS THAN A 1,000 MILES AFTER REPLACING- FUEL/WATER SEPARATOR LIGHT CAME ON. AFTER THIS WHILE DRIVING ABOUT 60MPH VEHICLE CUT OFF AND WE COASTED ONTO THE SIDE OF THE ROAD. LET VEHICLE SIT FOR A FEW MINUTES, VEHICLE WOULD NOT START BACK UP. WHEN ATTEMPTING TO RE-START THERE WAS A LOUD THUMP THUMP NOISE. WHAT SHOULD BE MY FIRST STEP, OR IS THERE ALREADY INTERNAL FAILURE OF ENGINE DUE TO THIS FUEL/WATER CRAP?
08 F250 6.4
VEHICLE HAD TRANSMISSION REPLACED- LESS THAN A 1,000 MILES AFTER REPLACING- FUEL/WATER SEPARATOR LIGHT CAME ON. AFTER THIS WHILE DRIVING ABOUT 60MPH VEHICLE CUT OFF AND WE COASTED ONTO THE SIDE OF THE ROAD. LET VEHICLE SIT FOR A FEW MINUTES, VEHICLE WOULD NOT START BACK UP. WHEN ATTEMPTING TO RE-START THERE WAS A LOUD THUMP THUMP NOISE. WHAT SHOULD BE MY FIRST STEP, OR IS THERE ALREADY INTERNAL FAILURE OF ENGINE DUE TO THIS FUEL/WATER CRAP?
Hotshot
Joined: Jul 2013
Posts: 14,266
Likes: 2,187
HELP!!
08 F250 6.4
VEHICLE HAD TRANSMISSION REPLACED- LESS THAN A 1,000 MILES AFTER REPLACING- FUEL/WATER SEPARATOR LIGHT CAME ON. AFTER THIS WHILE DRIVING ABOUT 60MPH VEHICLE CUT OFF AND WE COASTED ONTO THE SIDE OF THE ROAD. LET VEHICLE SIT FOR A FEW MINUTES, VEHICLE WOULD NOT START BACK UP. WHEN ATTEMPTING TO RE-START THERE WAS A LOUD THUMP THUMP NOISE. WHAT SHOULD BE MY FIRST STEP, OR IS THERE ALREADY INTERNAL FAILURE OF ENGINE DUE TO THIS FUEL/WATER CRAP?
08 F250 6.4
VEHICLE HAD TRANSMISSION REPLACED- LESS THAN A 1,000 MILES AFTER REPLACING- FUEL/WATER SEPARATOR LIGHT CAME ON. AFTER THIS WHILE DRIVING ABOUT 60MPH VEHICLE CUT OFF AND WE COASTED ONTO THE SIDE OF THE ROAD. LET VEHICLE SIT FOR A FEW MINUTES, VEHICLE WOULD NOT START BACK UP. WHEN ATTEMPTING TO RE-START THERE WAS A LOUD THUMP THUMP NOISE. WHAT SHOULD BE MY FIRST STEP, OR IS THERE ALREADY INTERNAL FAILURE OF ENGINE DUE TO THIS FUEL/WATER CRAP?
replace all your fuel filters , follow cycle off/ on procedures to bleed air, and it should start if you did not run the fuel pump dry trying to start it with what appears to be clogged filters.
do the bottom filter first
then do the top filter
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