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Car Forum / Ford / Ford Trucks / May 2004

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Water in Diesel

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Muskie - 23 May 2004 12:37 GMT
We had a major rainfall last night (the most I've ever seen in our area
by far) and my idiot son left the cap was left off my auxiliary fuel
tank. The truck is diesel and a lot of water got into the tank. Luckily,
I noticed the cap off before I started it. I noticed that diesel fuel is
heavier than water. Does anyone know how I can get the water out? Any
suggestions?
bomar - 23 May 2004 13:30 GMT
Specific gravity of diesel fuel : .82-.95 at 60 degrees F
Specific gravity of water : 1.0 at 60 degrees F

Diesel fuel has a lower specific gravity, therefore FLOATS above water.
Drain a few gallons from the BOTTOM of your tank.

> We had a major rainfall last night (the most I've ever seen in our area
> by far) and my idiot son left the cap was left off my auxiliary fuel
> tank. The truck is diesel and a lot of water got into the tank. Luckily,
> I noticed the cap off before I started it. I noticed that diesel fuel is
> heavier than water. Does anyone know how I can get the water out? Any
> suggestions?
Demon - 25 May 2004 06:29 GMT
Yes sir, diesel is heavier than water. Thats why the petcock is at the
bottom of the fuel/water separator on highway trucks and heavy equipment.

> We had a major rainfall last night (the most I've ever seen in our area
> by far) and my idiot son left the cap was left off my auxiliary fuel
> tank. The truck is diesel and a lot of water got into the tank. Luckily,
> I noticed the cap off before I started it. I noticed that diesel fuel is
> heavier than water. Does anyone know how I can get the water out? Any
> suggestions?
bomar - 25 May 2004 12:15 GMT
No true.
WTF does the petcock location have to do with it?

> Yes sir, diesel is heavier than water. Thats why the petcock is at the
> bottom of the fuel/water separator on highway trucks and heavy equipment.
[quoted text clipped - 5 lines]
> > heavier than water. Does anyone know how I can get the water out? Any
> > suggestions?
Demon - 26 May 2004 07:50 GMT
Ahhhhhhhhh typo, switch diesel and water. Fingers moving faster than brain.
The petcock is at the bottom of the cylinder to to drain off water from the
fuel system. As was said.

> No true.
> WTF does the petcock location have to do with it?
[quoted text clipped - 8 lines]
> > > heavier than water. Does anyone know how I can get the water out? Any
> > > suggestions?
Kevin Bottorff - 25 May 2004 16:34 GMT
"Demon" <noway@forgetit.com> wrote in news:5RAsc.577771$oR5.36673
@pd7tw3no:

> Yes sir, diesel is heavier than water. Thats why the petcock is at the
> bottom of the fuel/water separator on highway trucks and heavy equipment.
[quoted text clipped - 5 lines]
>> heavier than water. Does anyone know how I can get the water out? Any
>> suggestions?

uhhhhhh NO. fuel is lighter than water. KB

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Martin Rogoff - 25 May 2004 17:22 GMT
>Yes sir, diesel is heavier than water. Thats why the petcock is at the
>bottom of the fuel/water separator on highway trucks and heavy equipment.

It is at the bottom to drain the heavier water.  If the diesel were
heavier then the petcock would drain all the diesel and leave the
water behind.
XLanManX - 25 May 2004 19:14 GMT
>Subject: Re: Water in Diesel
>From: "Demon" noway@forgetit.com
[quoted text clipped - 3 lines]
>Yes sir, diesel is heavier than water. Thats why the petcock is at the
>bottom of the fuel/water separator on highway trucks and heavy equipment.

Speaking of petcocks, when I recently had to drain the water from the filter on
my '03 F250, I was dismayed to find a set screw requiring a 6MM hex wrench.
(You'd think Ford would throw in a $1.00 wrench on a $40K truck, right? Nope.)
I had to carefully reach up while on my back and loosen the screw just enough
to let the water drain while being careful to not let it come all the way out
lest the fuel start pouring out. I placed a container on the ground to catch
the water/fuel mix, but most of it ran down my arm. What *crappy* engineering.
I'm wondering if there's a petcock available or some other solution that is
more forgiving that the current design.
Robin Brumfield - 26 May 2004 15:00 GMT
> Speaking of petcocks, when I recently had to drain the water from the filter on
> my '03 F250, I was dismayed to find a set screw requiring a 6MM hex wrench.
[quoted text clipped - 5 lines]
> I'm wondering if there's a petcock available or some other solution that is
> more forgiving that the current design.

I couldn't agree with you more.  I have a 2004 F350 and discovered the
same thing when I first crawled under it to drain the collector.  I had
a 1999 and a 2001, both F250s, with the 7.3L PSD and the drain procedure
was to move the lever on the collector that was located on the top of
those engines.  A metal tube went down the engine from the collector.  
Unfortunately, it did not go down far enough so the first time I did it,
it made a mess underneath the engine.  The next time I got a short
length of plastic tubing and extended the tube into a gallon bottle.  
Ford has never been smart on this process from my experience but this
new design is even more horrendous since I cannot see any way to bypass
this "engineering brilliance"...:-)
JSMMV - 26 May 2004 03:26 GMT
>Yes sir, diesel is heavier than water. Thats why the petcock is at the
>bottom of the fuel/water separator on highway trucks and heavy equipment.

Diesel fuel has a specific gravity of .84 0r 52.1 lbs.per cu foot, water is
1.00 0r 62.4 lbs.per cu foot. Water is heavier.
Jeff
bomar - 26 May 2004 03:53 GMT
Actually as I stated above the specific gravity of diesel fuel is a range
(that varies with the exact distillate), and all liquids vary in specific
gravity depending on temperature.
Non-the-less, all diesel fuel is LIGHTER than water and will float above,
despite idiotic comments to the contrary.

> >Yes sir, diesel is heavier than water. Thats why the petcock is at the
> >bottom of the fuel/water separator on highway trucks and heavy equipment.
>
> Diesel fuel has a specific gravity of .84 0r 52.1 lbs.per cu foot, water is
> 1.00 0r 62.4 lbs.per cu foot. Water is heavier.
> Jeff
Demon - 26 May 2004 07:56 GMT
BTW bomar, go f.ck yourself.

> Actually as I stated above the specific gravity of diesel fuel is a range
> (that varies with the exact distillate), and all liquids vary in specific
[quoted text clipped - 9 lines]
> > 1.00 0r 62.4 lbs.per cu foot. Water is heavier.
> > Jeff
 
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