just a thought david would be to inspect the starter pilot bushing? they
do eventually wear ( some don't diesel oil/fuel is slick) and some may
collect the dust off the clutch(high friction) but in my case a
previously bad starter armeture had mauled the small amount of brass.
 Just a thought that is often overlooked, also check the resistance in
the Key circut to the starter solenoid as excessive current draw (
prolonged cranking) will muss up contacts over time. To check is to find
the wire to the solenoid from the key and give it live +  ( be in
neutral) and see if its any faster if not then ? if so check resistance
in ign switch.

>----------
>From:  David Raistrick[SMTP:xi8940@FREENET.TLH.FL.US]
>Sent:  Saturday, November 21, 1998 5:21 PM
>To:    VWDIESEL@PAS-NT.PAS.ROCHESTER.EDU
>Subject:       [VWDIESEL] Slow starter(s)...
>
>Yep.  Me again.  First, a thanks for all ya'lls help so far, I dont often
>get a chance to respond to your help...*sigh*
>
>84 Jetta TD, as usual.  Now that I've gotten to work with this car, I'm
>finding lots of things that prolly caused the no-start-when-hot bit.
>Looks like we have at least one externally leaking injector.  Leaks from
>between the injector halves.
>
>Also, during almost all circumstances, the bastard is just slow turning
>over.  Relativly new battery (Yeah, the oversized big'n our dealer decided
>"fits fine"...pletty of CCA and CA though..) (battery is probably about
>6-8 months old at the most..)
>
>We presently have our 3rd starter in it. (the first, though it appeared to
>be a recently replaced Bosch NEW unit, was pulled because of this same
>problem...except to the extent the car just wouldnt turn over much of the
>time, cold, hot, whatever.  Just a vrp, and thats it..)  Pulled the
>starter out of my truck, and out in.  Worked better.  Then it started
>having all this hot-start trouble.
>
>So now I pulled the starter off my brothers Rabbit (all diesel, btw..),
>since I know damn well that starter is good.  Same thing.  Exactly.
>
>So.  Not the starter.  Replaced the positive lead, as well as the
>3-position ground cable.   (Body, tranny hanger thingie, and strut tower)
>
>No change.  I have NOT yet put another battery in it, as this battery
>checks out fine.  (Presently has 12.582 volts in it...)
>
>So.  I'm looking for ideas here...If anyone has any, please let me
>know...(well, ideas in re: to the slow to turn over..I know how to fix the
>injectors...39 bucks eahc..*sigh*)
>
>thanks...david
>
>(oh.  one other thing.  What would cause one of these things to be slow to
>return to idle?  Tap the throttle, it revs fine, take your foot off, it
>takes 2-3 seconds to return to idle...or at least, longer than I recall
>them ever taking...and it's NOT the running-on-due-to-blowby problem,
>either..that's my brothers car...and why he doestn drive it...:)
>
>TIA...d
>