The water enters the gas tank probably from one of those 4 holes/ports you
see here. A new fuel tank or a reseal kit.

https://gowesty.com/products/fuel-tank

On Tue, May 30, 2023 at 10:00 AM Gabriel Hourtouat <ghourtouat@gmail.com>
wrote:

> Hi friends, it seems like ages since I have had anything to add.  Glad to
> be back:
>
> I had to drain water out of my gas tank after lurching, coughing and
> sagging onto a campsite this past weekend.  Not sure how the water got in
> there -- gas tank sender?  It had been raining.  Pointers on where to look
> for the point of ingress would be appreciated.  I assumed that the water
> would be on th bottom of the tank so I purged according to the method I
> describe below.  My trip home was uneventful so I initially assumed that my
> purge was successful since I had continued to purge off the bottom of the
> tank until the gas looked clear and clean.  HOWEVER, thinking back: the
> crud that came out of my tank (and fuel line) separated into two phases in
> my inspection bowl.  What is troubling me now, is that the bottom liquid
> was clear, and the TOP looked like an emulsion.  So if the emulsion was
> floating on top of the gas in my inspection bowl, should it not have also
> been floating on top of the gas in the tank?  Harumph.
>
> For reference in case it's handy for anyone else:
> -An effective draining/purging of the gas tank;
> -take precautions to NOT CATCH FIRE OR BLOW UP.
> -front right tire elevated 4.5" onto three 2x6" board thicknesses
> -front left tire elevated to near max height of the vehicle jack which was
> also elevated about 1.5" off the ground
> -use fuel hose clamps to control fuel flow***.  Allow zero leaks.
> -disconnect hose to the prefilter and catch the gas and crud into a
> suitable inspection vessel such as a (CLEAN!) clear disposable food
> container
> -drain small batches (half litre) at a time so you can inspect frequently
> and get a good feeling of when the fuel in your tank is good.  Pour the
> purged fuel into a suitably rated fuel can for later disposal (alternately,
> you can just drain large amounts directly into a fuel can?)
> -give the prefilter a shake and rinse it in some of that convenient clean
> fuel since it's almost off anyways, reconnect
> -disconnect the fuel return line from the other side of the fuel tank (I
> took the rigid tube out of the flexible hose)
> -run the engine while catching the crud that you are purging out of the
> fuel supply loop into your inspection vessel or fuel can
> -reconnect the return line
> -run engine and inspect for leaks. DOUBLE CHECK.
>
> ***I keep two fuel line hose clamps (orange plastic/nylon pliers-style
> clamps made for closing off hoses) in my driver's side door pocket for
> emergency closing of fuel or coolant hoses.
>
> Purging the fuel line was worth the trouble because that's where the
> ugliest stuff was hiding.
>
> gabby
> 86 waterboxer westy
>
>
> On Sat, Dec 11, 2021 at 8:49 PM Tom C <thomas.casal@gmail.com> wrote:
>
> > Oh yea I changed all the fuel lines including the plastic got rid of the
> > firewall failure point etc… I resealed the tank also this was all about 6
> > years ago. Tank reseal just failed last week not sure where yet have to
> > burn off fuel so I can drop the tank. I’m guessing the rubber o ring for
> > the fuel sender failed.
> >
> > On Sat, Dec 11, 2021 at 8:31 PM Chris Cary <chriscary48@yahoo.com>
> wrote:
> >
> > > I might’ve missed it. But did you do the lines that go to the two
> little
> > > plastic tanks that are inside front wheel wells?
> > >
> > >
> > > Sent from Yahoo Mail for iPhone
> > > <https://overview.mail.yahoo.com/?.src=iOS>
> > >
> > >
> > > On Saturday, December 11, 2021, 4:51 PM, Tom C <thomas.casal@GMAIL.COM
> >
> > > wrote:
> > >
> > > Thanks fellas. Sucks when the fuel tank reseal fails after 5, 6 years.
> I
> > > have to start looking into higher quality rubber seals especially that
> > > rubber o ring around the fuel sender. I have a feeling that’s where
> it’s
> > > leaking.
> > >
> >
> >
>