When you take the gas cap to fill up, does air go rushing into the tank?  I
had a rabbit that did that and at the end of the tank there was such a
vacuum, that the fuel pump was not able to pull enough fuel from the tank.
There should be a small vent on the cap which will allow air to replace the
used fuel in the tank.
Charlie johnson
84 Westy

Justin Pentecost <justin@KRASS.COM> on 05/17/99 08:17:31 PM

Please respond to Justin Pentecost <justin@KRASS.COM>

To:   vanagon@GERRY.VANAGON.COM
cc:    (bcc: Charles Johnson/RPM)
Subject:  Why Fuel Level Might Affect Performance

Now that is WIERD !! I had exactly the same experience today.    a couple
of days ago I had what i thought  might be a fuel pump problem .. then it
started missing today.    I filled it up with petrol ... ran sweet as a nut
...

At 13:18 17/05/99 -0700, Steven X. Schwenk wrote:
>Before heading out for a weekend trip, i checked to see what
>muight have caused my van to miss a few beats the last time
>i took it out 1 block from home.  i let it warm up and then
>gave it throttle right at the engine while watching the
>tack...it sounded terrible...missing badly at 3000+ RPM when
>i leveld it off and was no longer increasing rpms.
>
>fule level was just above the red reserve level.  I decided
>to fill up and see if that did anything.  It did...it
>completely eliminated the problem...not a single miss on the
>300 mile trip.
>
>I assume it's time for a new fuel filter.  Does anybody know
>if anything else might  result in the FI not getting
>sufficient fuel flow when the fuel level is low?  The van
>was level mostly and the level was just above the red
>reserve.  When I toook it out on the road, it produced the
>same missing.

Email:-jpentecost@easynet.co.uk  Tel:- +44 (0)171 837 8470
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