Since the starter isn't cranking the engine first
check if the starter gets full voltage and current.

Turn on the cabin light.
Attempt to start.
If cabin light dims noticably starter is getting some current.
If only little dimming (ie less than when pre-glowing the glow plugs),
then the solenoid in the starter doesn't close the main circuit to
power the starter motor.
If light goes completely dark you may have a bad connection
between the starter and battery, or similar problem.

I don't know what the "bang" might be, but it's a good idea to rule out
starter problems before proceeding.

People on the vanagon and/or diesel mailing lists may have more
tips.

Halsingar,
Martin

   From:        =?iso-8859-1?Q?Anders_Ravn=E5s?= <Anders_Ravnaas@hotmail.com>
   Date:        Thu, 6 Oct 2005 22:50:42 +0200
   Thread-Index: AcXKt5ozlaiJ2l6GSVq2J8Vk71PzMQ==

   Hello=20

   =20

   I was wondering if I could ask you a question?

   My radiator broke down here the other day, and when it did I Shut it =
   down
   immediately. The engine didn=92t overheat or anything. I got towed back =
   to my
   garage, and got a new radiator fitted. Once everything was in place, and =
   I
   was about to start up, it started fine but then stopped and I could hear
   some sort of a bang back from the motor room. It wasn=92t a mechanical =
   noise,
   it was more like something in the exhaust pipe or something, like an
   explosion. The engine went dead, and it didn=92t want to start again. =
   After
   this the fuse was gone on number 7 in the fuse box, and when I turn the  =
   key
   all I can hear is a tick from the starting solenoid or something. The
   starter won=92t turn the engine around. I=92ve checked the battery but =
   that=92s
   alright. There=92s plenty of power.The engine is a 1.6 turbo diesel. I =
   was
   then wondering if you could have any idea of what the problem could be?

   =20

   Regards

   =20

   Anders Ravnaas

   =20