Well, backfiring is usually either raw fuel in the exhaust system or bad
spark timing, but your initial post makes it sound like you filled up with
water-laden gasoline.

I have had symptoms similar to Jarrett's three times, in three different
Vanagons, when filling up at three different 76 stations in NW Washington.
I figure they're allergic to the stuff, and won't buy it anymore at any
price.

On 10/12/06, monte merrick <montemerrick@speakeasy.net> wrote:
>
> yes, ive moved past the clogged fuel filter diagnosis - which is a
> shame -
>
> among its many symptoms it is backfiring after a long high rev
> excercise - such as 3rd gear uphill - not always - and some moments it
> runs like its old self. cleaned ground connecctions - ran abunch of
> cleaner and drier through system - last thing to to try was buying
> citgo gas as an act of good faith - who knows??? so far results
> indicate no effect one way or another -
> one suggestion was a clogged cat. converter - what causes this? i dont
> know - and is it fixable without a new part? also i dont know.
>
>
> anyway there it is - baffled me
>
>
>
>
>
>
>
> On Oct 9, 2006, at 1:37 PM, Roger Sisler wrote:
>
> A whining fuel pump is usually a symptom of fuel starvation by a plugged
> filter.
>
>
> "I long ago lost a hound, a bay horse, and a turtle dove, and am still
> on their trail. Many are the travelers I have spoken to concerning
> them, describing their tracks and what calls they answered to. I have
> met one or two who had heard the hound, and the tramp of the horse, and
> even seen the dove disappear behind a cloud, and they seemed as anxious
> to recover them as if they had lost them themselves." - henry thoreau
>

--
Jake
1984 Vanagon GL
1986 Westy Weekender "Dixie"
www.crescentbeachguitar.com