On Sat, 27 Apr 1996, Sean Bartnik <sbart7kb@www.mwc.edu> wrote:
>I was just curious as to what kind of Bosch fuel injection system was
>used on late breadloaf buses ('75-'79).  Is it L-Jetronic or K-Jetronic?
>What's the difference?  I read this somewhere before (in a Bosch FI
>book) but now I can't remember.

The FI system in your bus is Bosch L-Jetronic.  The L is short for the 
German word luft, which means air.  In this system the amount of fuel 
injected is based on how much _air_ enters the intake.  This system also 
goes by the moniker AFC for Air-Flow Control.

The Bosch K-Jetronic is the first Continuous Injection System (CIS). 
I think it was used on water-cooled Rabbit/Golf VWs.  The K is short for 
the German word for continuous (Kontinuerlich).  It's mostly a mechanical 
system in the early versions.

Over the years, both systems were refined by the addition of an oxygen sensor 
to attain a more precise air/fuel mixture.  This is named Lambda control.

Jack  '73 Westfalia  ('78 motor)
Costa Mesa, CA