1995 Buick Century Starting

Are you saying it cranks good, but won't start or it won't even crank? If it won't even crank, check starter wiring circuit. Did you try cranking in neutral? The purple wire at the starter solenoid S terminal, should be hot with the key in the crank position.

If it cranks good but won't start, have a helper crank it, while you visually check for spark at the plugs. If you have spark everywhere use a gage and check fuel pressure. Some of the national brand autostores used to loan out a fuel pressure gage, if you don't have one.

Make sure the battery has a full charge and all battery connections on both ends are clean and tight. Watch the dash lites when you try to crank, do they flutter, go out, stay bright and don't do anything? You may have to check voltage on the purple wire, I mentioned. There is no injector relay, that I'm aware of?

You need to check the wire I mentioned at the starter solenoid. There is no fuel injector relay.