Fiat Tipo not starting(sometimes) UK model.

Hi all, I've got a 1400ie L reg tipo that fails to start, it turns nice and quick, but dont get a spark.The RAC man said it could be a stick/faulty ignition
relay. He tapped all of the relays on the fuse board and it sprang into life. Which one is the ignition relay and any more thoughts. Is there an on-board diagnostic port so i can read the ECU on these Tipos for errors?
Thanks John PS email address will worK!!
snipped-for-privacy@channel19.demon.co.uk
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ignition relay. He tapped all of the relays on the fuse board and it sprang into life. Which one is the ignition relay and any more thoughts.

No spark, most likely the crank sensor.
Hellraiser...........>
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