Hear is the Test you can do......Have the King lead out of the Distributor set up ready to view the H/T spark..ie close to the car frame...unplug the Distributor 3 pin plug, you will see a "Brown wire" thats earth".....a "Black/Red wire" thats live with ignition on ...but only 4/5 vots.....important to check this [test this with meter as if this is "low"...then fault in ECU ]....and a "Green/yellow wire"...thats pulse to the ECU, to test you need a 12v test lamp..with the ignition on test lamp on earth...probe the Pin of Green/yellow..off & on..quickly..you should see a strong spark and Hear the Fuel pump relay "click in"....Pump buzz ....this says...ECU all OK..wiring all OK...you have fault in Distributor...i suspect this. hope of help ... Peter