Bradley,

Check your throttle switches.  I'm not sure if the '84 Digijet does the same
thing, but the Digifant turns off fuel injection when you're above some RPM
number (2500?) and foot off the throttle.  I suspect that the throttle switch
is not being pushed and therefore FI is not being turned off.

Go back to the engine compartment with the engine off and manually move the
throttle.  You should hear a click when you take it off idle and another when
you put it back to idle setting.  If not, check the cam on the switch and/or
the continuity.

Regards,

-Karl

> If I'm coming down a hill and I let off the gas almost entirely, I sometimes
> get a real loud POOF!, sometimes 2-3 times.  My exaust system does have a
> couple holes in it.  It does need to be replaced...  But I suspect this
> should happen at all.
>
> I thought maybe I should check my timing.  I don't have a timing light.  But
> if enough of you fine vanagon mailing list folks suggest this might be a
> problem, that would be good enough reason for me to go and buy one.
>
> My father suggests that the holes in the exhaust system are just making it
> sound louder, and it's really nothing to worry about.
>
> I just keep visualizing a backfiring that's making this poof! sound, and
> putting stress on my heads.
>
> Input?
>
> Thanks,
>
> Bradley Flubacher
> State College, PA
> '84 waterboxer
>

Karl & Kristina Bloss, Trexlertown, PA
'00 Wannabusser "Julia"
'87 Weekender "Bev" - 201K Miles
'85 Westy Camper "Fred" - 39K Miles
http://www.enter.net/~bloss/vw - vanagon@makarov.com
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