> Larry,
> 
> Your explanation of the effects of a dirty injector do not conform with the
> symtoms that I am experiencing.  The motor starts up fine and runs well until
> its hot.  Then the problems starts with black smoke, mis-firing, and no power. 
> Then I turn if off, and then back on again and it runs fine for a short while
> and then the problems starts up again.  Would a dirty injector contribute to
> such behavior?
> 
To me, this sounds more like an electrical/electronic problem, since 
the symptons disappear after a brief power off, then reappear soon 
after. Try checking all electrial connections, especially those from 
engine sensors, etc, leading to the ECU.

Shawn Wright (VWnut@smus.bc.ca)
'88 Westy (336k)
'85 Jetta TD (358k)
'69 Wife
'97 1st child (! :)