Ferrari Mailing List: FI idle question, etc.

[Rick Lindsay (rolindsay]

Hey Gang,

What is the preferred way to set the idle speed on a K-Jetronic injected car?  
The Mondial Service Manual says to set the idle with the butterfly closing 
position adjustment, not the air bypass valve.  In fact, it says to run the 
bypass screw all the way closed unless proper idle speed cannot be set with the 
butterfly adjustment.  The Bosch K-Jetronic manual says to NEVER set the idle 
speed this way and to use the air bypass valve!  It goes on to state that the 
butterfly limit screw is only to prevent damage to the butterfly.

Some might argue that I should just set the idle speed any way I choose and 
drive the car.  I on the other hand, enjoy the voyage not so much the 
destination.  I want to rebuild the whole FI according to the book.  The 
question remaining is, which book?

And on a similar topic, the Mondial QV Service Manual shows the throttle 
linkage on the bottom of the throttle body (butterfly shaft vertical).  The 
parts manual shows the body rotated 90 degrees with the linkage on the left 
side (shaft horizontal).

And on a similar, similar topic, my '83 Standard Specification Mondial QV uses 
the same air plenum as the Mondial 8, not the later QVs, where the throttle 
body IS rotated.  This arrangement agrees with the parts manual.  Confusing fun.

Yea, these cars - being the unloved 2+2 children - seem to show a whole lot of 
variability.  Interesting stuff, well, to me anyway.

regards,

rick