Not saying this is the likely cause, as there's much more knowledgable
folks than me commenting in this thread, but its my misunderstanding
that a Vanagon fuel system can show
good pressure but still have a poor delivery rate.

My theory: if fuel tank has enough debris in it,
after the 30", that debris could block the pickup as fuel gets sucked out.
Images showing inside of 1990 fuel tank:

http://tinyurl.com/lrwkcpd

your fuel tank may be different though.

Also, assuming your bus doesn't have a pre pump filter, there
is a screen at the inlet of your fuel pump. Maybe dirt-debris
could bunch up at this screen and block it after 30" ?

And, could a clogged cat cause the same symptoms?

Neil.

On 2/28/15, Kevin Duvernay <kduvey@gmail.com> wrote:

> Neil, that was my first thought actually. Alan has replaced the fuel filter
> and when he did so he said some rusty looking fuel came out of it...
> However, the fuel pressure at the testing nipple checks out. clean gas is
> squirting out of all injectors in a nice conical pattern.

--
Neil n

Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>

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