[Vwdiesel] Strange "power surge"

[LBaird119 at aol.com]

In a message dated 3/6/2006 5:42:49 PM Pacific Standard Time, 
bobs at chemdec.natsci.csulb.edu writes:

> The idle screw adjust is very touchy, about a half turn goes 
> from way too fast idle to much too slow idle.  Any ideas on this?
> 


 I've seen it happen when the fuel volume screw has been messed with.  
Now if you happen to be turning it instead of the idle screw...  ;-)
  If you have heavy smoke when romping it then back off the fuel screw 
and you can turn up the idle. Sounds like the idle speed you want is 
right on what you'd call the transition range on a carburetor.  This would 
put you on the low end of the transition but with less fuel and thus a lower 
idle than you see now.  
  If you get no smoke when flooring it (cable adjusted and no floor mat 
under the pedal) then turn the fueling up and get back into the idle circuit 
(spring) with hopefully a fast enough idle.  :-)
     Loren