[Vwdiesel] TDI non-start

[S. Shourds]

I've been fighting the TDI the past week.  I can't get it to start at 
all.  Even a cough is a wish unanswered.  I had been having a bit of 
trouble starting lately.  An intermittent slow start which I had thought 
was fuel filter seal related.  I'd fool with it and it'd start right 
up.  Until the day it didn't.

It's in the driveway now and I cannot think why it won't start.  I 
installed a clear fuel line into the pump and there's an almost solid 
stream of fuel in there.  There's also fuel if I loosen a fuel line at 
an injector.  It cranks fine.  I didn't static test the engine timing, 
but it had been fine recently and I didn't hear anything go crunch (and 
the belt is tight).  So, here's my problem:  If it has fuel, decent 
compression, and is reasonably close to time, a Diesel should start yes?

I fired up the computer to link to the VAG-COM.  Weird thing there is 
that it will only connect to the ABS, instruments, and CAN gateway 
modules.  The engine, electrical, etc. modules read as not available.  
"Controller Not Ready" is what I get when I try to scan the engine.  
There was this one time when it did connect to the engine after sitting 
for a weekend and only showed an intermittent glow plug error which is a 
red herring.  After I cranked the engine, it didn't scan the engine again. 

What I've done so far:  Replaced fuel filter seals, observed for bubbles 
in fuel line, replaced 109 relay (can't hurt, might help) and checked 
the anti-shudder valve.

Anyone have any ideas of where to look next?  This one is getting beyond 
me. 

Thanks,

-Shalyn

-00 Jetta TDI