How do I best diagnose no spark on 96 chrysler sebring 2.5 .installed new distri

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Bought car couple weeks ago,been sitting a good while & without a hood. When last owner purchased car it needed a distributor. I helped install it and ran fine. Months later they hadn't done anything with so i bought it. Wouldn't start and had no fire. Did basic test and checks..fuses good..power to distributor..fuel pump primes.. I've now changed distributor again cause last one had small crack..installed new plugs and still nothing. Need help fast.. Girlfriend about have baby soon.what do I do to figure why no spark