Glad I could be of help.
Scott 
www.turbovans.com 

-----Original Message-----
From: Rob [mailto:becida@comcast.net] 
Sent: Wednesday, May 14, 2008 7:50 PM
To: Scott Daniel - Shazam 
Cc: vanagon@GERRY.VANAGON.COM
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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