[Vwdiesel] Makes blue smoke when first starting engine in morning. Why?

[LBaird119 at aol.com]

  Regardless that you've had them tested, I still say the most likely 
cause is the injectors.  ;-)  Was it a shop that specializes in diesel 
and injection or just someone that could test them?  If you don't know 
what a new/good one looks and sounds like, one that needs replaced 
can look fine unless you compare.  It could also be timing set too 
retarded, such as a yellow dot pump set to early pump specs or 
timing set with the advance pulled out.
  Give it the sniff test.  If it smells like diesel then it's fuel related.  
If 
it smells like oil then it'd be valve stem seals most likely.
    Loren

In a message dated 5/8/2006 7:01:52 PM Pacific Standard Time, 
sherwingoff at yahoo.com writes:

>  I had the injectors removed and each one checked for pressure and also 
> tested for a good misty spray.
>   
>  What are the possible causes of blue smoke when first starting the engine 
> in the mornings? 
>