Help with ignition trouble

[Vikram Mittal]

Car:  1990 Audi 100
	2.3 liter 5 cylinder
	CIS III

Problem: Stutters but fails to start

Repairs done:  Spark plugs, rotor, distributor cap, spark wires replaced.
Ignition coil primary and secondary resistance values check OK.

The car does not start.  While the starter has the motor turning, it seems
to come alive but dies when I release the starter.  I sense it is some kind
of ignition trouble since there seems to be no problem with fuel delivery.

Where can I now look to diagnose the problem ?  The car has been down for
almost  three weeks.