Water/Fuel Separator
Thread Starter
|
New User
Joined: Apr 2018
Posts: 12
Likes: 0
Water/Fuel Separator
Just finished changing out the water/fuel separator sensor and the dreaded "water in fuel" is popping back up again. Has anyone experienced this? I have read on several forums, including this about resetting; however I am not completely following on what everyone is talking about. Any info will be greatly appreciated.
2008 F250, 6.4L (EGR & DPF Deleted)
/r
JD
2008 F250, 6.4L (EGR & DPF Deleted)
/r
JD
Hotshot
Joined: Jul 2013
Posts: 14,301
Likes: 2,197
ive gotton false readings during/after winter due to gel accumulation in the fuel conditioning module.
this gel can be difficult to remove. I had to use a siphon pump on mine.
why did you need to change the filter twice in 30 days?????could there be gel in the fuel tank???
do you use anti gel additives during the winter?
Thread Starter
|
New User
Joined: Apr 2018
Posts: 12
Likes: 0
The reason I changed the filter was someone told me that it could be getting dirty from the tank and causing the sensor to give a false reading. After the second filter change and the light still came on, I was told it was more than likely a bad sensor. When I took the old sensor out, it was really corroded and figured that was definitely the problem. Now that the light has come on again, I am at a loss for what it might be. Someone has suggested I might need to take the HFCM off the vehicle and tear it apart. Is this something I need to do?
Thread Starter
|
New User
Joined: Apr 2018
Posts: 12
Likes: 0
Anyone, Anyone? Has anyone even taken the HFCM off to clean? There has to be more F250 guys on here than this? Need help with this please, before I spend several hundreds of dollars to replace. Can't afford a dealership, they want $986 to repair/replace.
Trending Topics
Hotshot
Joined: Jul 2013
Posts: 14,301
Likes: 2,197
the only cleaning adventure I had with mine was the drain being clogged. I put a pump on the drain and sucked the sludge out. Then it drained correctly.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Logistics Pro
Joined: Mar 2012
Posts: 3,507
Likes: 121
From: Oregon
You can buy the seals and gaskets needed to tear down, clean and rebuild the HFCM from Ford. Get the gaskets, pull the thing off the frame and take it apart to clean. If you find a huge buildup of debris in the HFCM you are going to need to drop the tank for cleaning.
Thread Starter
|
New User
Joined: Apr 2018
Posts: 12
Likes: 0
speakerfritz, I was thinking of doing this; however I have read so much on here about putting air in the line and messing up the HPFP. Same goes for Evan P idea of rebuilding. Quick question: shouldn't my filter on the HFCM indicate a buildup of debris/sludge in the tank? I am hoping it just needs a good cleaning, not sure how complex of a job this is.
Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 350
From: Breckenridge, TX
This thread is for the "similar" but not identical HFCM on a 6.0:
https://www.ford-trucks.com/forums/1...fuel-pump.html
Removal on yours is the same as the 6.0, it's once you get it on a bench and start opening it up that it's different.
This is a pretty typical "crud" build-up in the water trap/WIF sensor area (borrowed from another forum, you can find it via google image search):
Thread Starter
|
New User
Joined: Apr 2018
Posts: 12
Likes: 0
Thanks texastech diesel. One other question then: would it hurt to take small about of air to blow back up thru the water drain, maybe just to see if something is blocking it? I just don't want to damage anything or put a lot of air in the line.
Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 350
From: Breckenridge, TX
If you're having a recurring WIF light I'd think the debris issue is severe enough to warrant pulling and cleaning. Air might pop the drain open and let a little more out, but look at the build-up in there, that's not coming out with air. To get the pump out all it takes is disconnecting four fuel lines, removing three bolts, and one wire connector. If you ordered the seals ahead of time I'm thinking 2-3 hours tops to pull, clean, reintsall even if you've never done this before.
Food for thought: water is the death of the HFCM and common-rail injectors. Do you want to let a $10k fuel system ride on a cheap fix instead of putting in a Sunday afternoon worth of work?
Food for thought: water is the death of the HFCM and common-rail injectors. Do you want to let a $10k fuel system ride on a cheap fix instead of putting in a Sunday afternoon worth of work?
Thread Starter
|
New User
Joined: Apr 2018
Posts: 12
Likes: 0
If you're having a recurring WIF light I'd think the debris issue is severe enough to warrant pulling and cleaning. Air might pop the drain open and let a little more out, but look at the build-up in there, that's not coming out with air. To get the pump out all it takes is disconnecting four fuel lines, removing three bolts, and one wire connector. If you ordered the seals ahead of time I'm thinking 2-3 hours tops to pull, clean, reintsall even if you've never done this before.
Food for thought: water is the death of the HFCM and common-rail injectors. Do you want to let a $10k fuel system ride on a cheap fix instead of putting in a Sunday afternoon worth of work?
Food for thought: water is the death of the HFCM and common-rail injectors. Do you want to let a $10k fuel system ride on a cheap fix instead of putting in a Sunday afternoon worth of work?
Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 350
From: Breckenridge, TX
I'll try, but I'm a 6.0 guy, so I might be kind of limited to just helping with the pump. The procedure should be similar to after you change filters out, and sounds like you're up to speed on it, but a 6.4 guy will need to chime in to make sure I don't say anything dumb about the air bleed part of this.