Date: Sat, 27 Nov 1999 11:17:08 -0800
Reply-To: Mark Keller <kelphoto@ISLANDNET.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mark Keller <kelphoto@ISLANDNET.COM>
Subject: Contaminated fuel was Re: How does the Oxy Sensor Work/ go bad?
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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.
I've read many posts with the "clogged" fuel filter, power surging etc.
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 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? Maybe this was a cheaper fix/ solution in "most" operating
conditions, that to put a non-vented fuel system in the van.
<BR>
<BR><I></I> <I></I>
<P><I>Doktor Tim wrote:</I><I></I>
<P><I> Look elsewhere for your problem if the filter is in good order.</I>
<BR>
<BR>I. 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>
<P> <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. The fuel filter's position, Horizontal, does seem to give water
a place to collect, acting as it were to be a water separator. I'm
not aware though of any "media" that would plug at the introduction of
water.
<P>
<BR> <I>Gas and water do not mix.</I>
<P>II. 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.
If the filter has some water in it, water may be introduced into
the fuel line pickup.
<P>Sincerely,
<P>Mark Keller
<BR>91 Carat
<BR>
<BR>
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<BR> </BLOCKQUOTE>
<BLOCKQUOTE TYPE=CITE> </BLOCKQUOTE>
<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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