[Vwdiesel] Injector pump leak 91 TD

[LBaird119 at aol.com]

In a message dated 6/16/2011 10:01:44 A.M. Pacific Daylight Time,  
snowinflyboy at gmail.com writes:

Should a  generic O-ring of the correct ID work in this instance?  Does  the
smoke screw affect the cold start timing at all?  Or would the  large RPM
variance be a smpli matter of adjusting the  cable?
  Not quite.  Generic o-rings are generally buna-n.  Big  no-no around 
petroleum, 
probably viton.
 
  By turning up the fuel delivery it WILL turn up the idle but that's  not 
the way 
to do it.  Idle is turned up with the idle stop screw on top of the  pump.  
There's 
an identical full throttle screw on the other side of the top.  "Fast  
idle" should 
be adjusted with the rod length from the cold start advance lever.



Currently she smokes hard under heavy acceleration with  what looks like
unburnt fuel (white) mixed with the usual black  smoke.  Would this indicate
someone buggering with the smoke screw  already?




Unburned fuel is white, too much is black.  Almost sounds like  you might 
need 
injectors.  If it's over 120K miles, it probably does and do them  BEFORE 
dinking 
with any fueling.  Also have a new air filter so you get proper  
atomization and air 
flow to the engine.  THEN you can start the small can of worms of  toying 
with your 
fueling.  You should have a pyrometer before doing much of it.
  You can safely leave that screw backed out a itsy bit at a time  until 
you get rid 
of your black smoke.
     Loren