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Old Oct 14, 2007 | 09:19 PM
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water seperator

I have a 99 7.3. when draining the water seperator how long should I keep the petcock open?

Jeremy
 
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Old Oct 14, 2007 | 09:21 PM
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long enough to drain the filter housing of water!
 
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Old Oct 14, 2007 | 10:10 PM
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no one knows?
 
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Old Oct 14, 2007 | 10:11 PM
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How would i know all the water is out, it's a puddle on the ground?

Jeremy
 
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Old Oct 14, 2007 | 11:30 PM
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Don't have any experience with the older PSD',s, and I rack miles up so fast on the 6.0L in the '06 that I change the filters every 3 months so I haven't had to drain it once yet, but whenever I drained the separator on my motor coach (semi class motor), I was always able to tell when the stream changed from water to fuel. Then I closed the petcock.
 
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Old Oct 15, 2007 | 01:17 AM
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drain it into a container (clear plastic) and you can tell when the water changes to fuel. they obviously don't mix well.
 
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Old Oct 15, 2007 | 06:57 AM
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Alright Tex, Thanks for the tip.

Jeremy
 
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Old Oct 15, 2007 | 11:43 AM
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On my 6.0L I just drain it till it stops.
 
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Old Oct 15, 2007 | 04:52 PM
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I have a 2003 7.3L and I also just drain mine until it stops, maybe 10-15 seconds or so. If yours is continuous I'm sure that after 10 seconds or so you'd be down to just fuel (your fuel bowl is probably around, if not, the same size) and you could shut the petcock.
 
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Old Oct 15, 2007 | 05:38 PM
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the stuff on top is diesel, the clear stuff is obviously water

 
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Old Oct 15, 2007 | 05:43 PM
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how often do you you have to drain the water seperator these diesel engines?
 
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Old Oct 15, 2007 | 06:04 PM
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They say aprox every 5000 miles.I do it every oil change.
 
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Old Oct 15, 2007 | 06:58 PM
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Every 5000 miles? Darn, I thought it was like every month. Thanks for all of the help. You guys definately(however you spell it) know your stuff.

Jeremy
 
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Old Oct 15, 2007 | 07:27 PM
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It depends on how you take care of it. In Lubbock in the winter it get's kinda humid sometimes, so if your tank is low, there can easily be lots of condensation in the tank, which means you need to drain it more often. In the winter, I keep the tank at least half full to make life easier on the fuel pump/filter/seperator ect. Just put in 40 bucks every Monday and life goes great.
 
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