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Listees,

<P>I really want to understand if having a vented fuel system, with a fuel
tank in the slipstream, can produce condensate inside the fuel tank.&nbsp;
I've read many posts with the "clogged" fuel filter, power surging etc.&nbsp;
My guess is that it is really water in the fuel filter that it the problem
with surging, no starts and etc. in some vans.

<P>Is the vanagon's fuel tank up front, possibly more exposed to the wind
slipstream, becoming super cooled, i.e. colder inside the tank than outside
air. This would cause the&nbsp; the air temperature inside the fuel tank
to become lower to the point at which moisture in air will condense from
water vapor to water droplets.

<P>Simply put, conditions conducive to "rain" in the gas tank can occur
at in high humidity low temperature situations.

<P>Perhaps this is why the fuel filter on our van is located horizontal
and so large?&nbsp; Maybe this was a cheaper fix/ solution in "most" operating
conditions, that to put a non-vented fuel system in the van.
<BR>&nbsp;
<BR><I></I>&nbsp;<I></I>

<P><I>Doktor Tim wrote:</I><I></I>

<P><I>&nbsp;Look elsewhere for your problem if the filter is in good order.</I>
<BR>&nbsp;
<BR>I.&nbsp;&nbsp; Thanks for the info, but the surging problem disappeared
after adding a product to disperse water in my fuel. So I'm looking at
how address water in the fuel.
<BR>&nbsp;

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <I>The
fuel filter (Bosch) is designed to stop the passage of water. It will clog
before it gets through, by design.</I>

<P>I.&nbsp; The fuel filter's position, Horizontal, does seem to give water
a place to collect, acting as it were to be a water separator.&nbsp; I'm
not aware though of any "media" that would plug at the introduction of
water.

<P>&nbsp;
<BR>&nbsp; <I>Gas and water do not mix.</I>

<P>II.&nbsp; While my van is parked level, my drive way is 11 degrees inclined;
so when I back out the horizontal filter with it's load of water gets sloshed.&nbsp;
If the filter has some water in it, water&nbsp; may be introduced into
the fuel line pickup.

<P>Sincerely,

<P>Mark Keller
<BR>91 Carat
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<BLOCKQUOTE TYPE=CITE>If water
<BR>does get through, it will take very little time to clog the injectors
and
<BR>won't run.

<P>Doktor Tim
<BR>Maintenance Repair and Restoration of European Vehicles
<BR>San Juan Island, WA</BLOCKQUOTE>
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