You need to check for injecter pulse with a noid light. (shown below). The distributor pick up supplies reference signal for both the injecters AND ignition signal. If you lost both it would point to the pick up as being the problem. If it was only ignition pulse signal that you are losing, that would point to the ignition module. You first have to make sure they are both getting 12v power supply as the reference signal is a pulsing ground trigger.
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