I have an 89 civic si... rolls over but won't start,there is no fire.Fuel pump won't engage.tried to switch the relay.. (used part) didn't do anything.Any suggestions?

Read Sections A and B below:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-46563.html

You probably need a new fuel pump. Check any fuses and for power to the pump prior to removing the pump, just to be sure it's not something simple.