Which CIS-E do you have?  CIS-E or CIS-E with Knock Sensor?

At 01:25 PM 22/06/2000 +0000, Dr. Theodore B. Hoekman wrote:
>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
>
>

-- David Marshall - Volkswagen Enthusiast - Quesnel, BC, Canada   --
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