All CIS-E guru's, I need some advice suggestions.   I have a 1982 westy
(formerly diesel) that now has a 1986 Jetta GLI engine with the CIS-E fuel
injection.  I did the conversion in 1994, and it has run many strong steady
miles (about 40K).  As I was returning from a long fast road trip last
august I began to get intermittent problem behaviour.  It was characterized
by power loss and humongous backfiring when decellerating  with engine
braking.  However it would come and go, be present for 20 or 30 minutes and
then back to normal sturdy behaviour.  In the Fall I put the van in winter
storage as I usually do, and now have been driving it as I am doing the
GMBulley treatment to silence the interior prior to summer travel.  The
problem has become almost continous.  It is minimal when the engine is
cold, getting progressively worse as it warms up to full operating temp.
After replacing a bad distributor rotor, the power loss problem seems to be
gone,  or minimized but the backfiring is if anything worse.  It runs
strong, accelerating and maintaining highway speed, but people are looking
around for drive-by shooters when I coast into a stoplight.  Can't be
healthy for the exhaust system!

My very knowledgeable mechanic thinks its a timing problem, but fiddling
with backing off on the advance doesn't seem to have any real impact.  My
theory is there is something funny going on with the fuel control.   Any
suggestions or remedies from the CIS-E afficianadoes out there (David
Marshall? or anybody else with experience).

Hoping for list knowledge.

Ted Hoekman
Dr. Theodore B. Hoekman, Professor Medical Informatics
Faculty of Medicine
Memorial University of Newfoundland, St. John's, NF Canada A1B 3V6
http://calloso.med.mun.ca  (709)737-6703