Probably a wiring problem - trying running a wire straight from the battery onto the black wire on the ignition coil (leave original wires on there aswell). Also check that there is an ignition feed going to the distributer aswell. Again you can run a feed straight from the battery for this.

These are for checking only and if it starts then you know what the problem is. Dont use this as the proper repair.

If this dont work then it is probably related to the ECU but try the simple stuff first.

CheeRS