Scott says, its "gummed up".  So, what's causing gumming up?  And what does
gummed up look like?  Goo?  Jelly?  Or is it just simply dirt?  Can it not
be blown backwards and get it out by the sender unit's hole?
Zoltan

----- Original Message -----
From: "Rob" <becida@COMCAST.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, May 14, 2008 7:49 PM
Subject: Re: Older gas tank problems- was Noisy fuel pump causes

> Thanks for the education Scott, that explains a lot.
>
> Rob
> becida@comcast.net
>
> At  5/14/2008 07:38 PM, Scott Daniel - Shazam wrote:
>>Here's how I understand vanagon 2WD fuel tanks, both diesel or gas  :
>>
>>So I took my tank to my radiator shop, back when you could get them worked
>>on easily by many radiator shops.
>>See that 6 inch diameter round area in the middle of the tank bottom
>>side -
>>that's a sump area.  ?
>>That's a screened sump pick up area - that's where fuel is drawn from via
>>internal pipe from the corner outlet. And the screen allows only clean
>>fuel
>>into the pick up pipe. The screen area can goo up.
>>
>>
>>When you look inside the fuel tank through the fuel sender hole - they
>>often
>>look clean as a whistle.
>>
>>So I tell my radiator shop guys to fix it , clean it out, whatever.
>>I go down there one day and they  had  cut it open in the sump area.
>>And........yup, gummed up .
>>
>>So when I see gas ( or diesel ) fuel won't flow out of that corner pipe,
>>with say 1/4th of a tank of fuel - I diagnose is a 'clogged up tank. '
>>
>>The only real repairs is a good used tank or a new one.
>
>
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