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Old 04-11-2015, 05:58 PM   #1
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6.7 Powerstroke - Water in fuel MSG

Just thought I'd throw this out there as an FYI for those of you with the 6.7. Long story short - If you receive a "Water in Fuel - Drain filter" message, and you drained the filter and didn't find any water there, and the message won't clear, there is a good chance water got into the electrical connector at your separator. So unplug the connection, blow it out dry with a compressor and plug it back in. More importantly yet, you must drive the truck for 5 or so miles at highway speed for the message to clear. Throw a little dielectric grease on the connection while you are at it.

This is the first time I have had any issue with this system and I regularily power wash the underside of the truck. Difference was this time I had brought it in for the annual undercoating and when they power washed the underside it must have gotten in and they must have sprayed high pressure water at the connection directly.

I spent hours on the trying to get opinions from local Ford diesel mechanics but it didn't really help (also doesn't help its a Saturday) None advised me to do this, they all recommended it be brought in and drained and checked out. I found this procedure on a Powerstroke forum. Hopefully nobody will have this headache but if you do, hopefully I can save your guys a bit of headache, money and wasted time.
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Old 04-11-2015, 07:26 PM   #2
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I don't have a Ford but this is probably good info for any diesel, so thanks! BTW, have you ever power washed your engine? I don't mean go wild by putting the highest pressure right on the engine but just getting some of the grime off? About three years ago my dealer told me that could be done but to just stay away from the air intake. I've never done it cuz it sounds kinda crazy to me.
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Old 04-11-2015, 09:05 PM   #3
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troutslayer,

In the "old days" I would often wash off the engine block (avoiding electrical and air intake with the spray) because oil seeping was more common and an insulating layer of dirt and oil would form, increasing engine operating temperature.

I don't t see oil seep on a modern engine and so don't see a need to wash. I think you can, but far more wires and sensors to avoid than the "old days."
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Old 04-13-2015, 04:10 PM   #4
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Quote:
Originally Posted by RUSSELL5000 View Post
troutslayer,

In the "old days" I would often wash off the engine block (avoiding electrical and air intake with the spray) because oil seeping was more common and an insulating layer of dirt and oil would form, increasing engine operating temperature.

I don't t see oil seep on a modern engine and so don't see a need to wash. I think you can, but far more wires and sensors to avoid than the "old days."
+1, plus there are way more electronics in todays engine compartments than ever before. I avoid washing the engine compartment, unless it is absolutely necessary
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Old 04-13-2015, 06:35 PM   #5
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Thanks for the post UPcamper good to know
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Old 04-14-2015, 08:14 AM   #6
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WD40 also works well to clear out the water .. then use the dielectric grease
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Old 04-14-2015, 08:58 AM   #7
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UPCamper,

I work at a Ford dealer. How many times has the WIF message come on? The reason I ask is, the vehicle has a "counter" on it and after so many times..it'll de-power the truck. And if you don't have an IDS (diag tool) it'll strand you somewhere. You STILL need to take it in!
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