Date:         Thu, 2 Dec 1999 17:43:21 -0800
Reply-To:     Doktor Tim <doktortim@ROCKISLAND.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Doktor Tim <doktortim@ROCKISLAND.COM>
Subject:      Re: Help
Comments: To: "Charles A. Strott" <chastro@BOX-C.NIH.GOV>
In-Reply-To:  <v04220807b46c85f47550@[128.231.223.51]>
Content-Type: text/plain; charset="us-ascii"

At 03:29 PM 12/02/1999 -0500, you wrote:
>

Charlie,

Your symptoms can be caused by several things, but is very typical of
exhaust back pressure problems. The matrix in the catalytic converter can
come loose and shake to the point of causing a restriction. The baffels in
the mufflers can rust loose and cause this as well. Try wrapping on them
with a soft faced hammer or the heal of your hand to see if you hear
anything rattling inside.

Low fuel pressure can cause very similar symptoms, either from a weak pump
or clogged filter. Low spark energy from old ignition components can cause
similar problems. A clogged air filter is also a possable. Check your
maintenance history to determine if anything is long overdue for
replacement. Regardless, an inspection of these basic is in order if a
quick rapping of the exhaust suggests no problem there.

Let us know what it is when you find it.


Doktor Tim
Maintenance Repair and Restoration of European Vehicles
San Juan Island, WA