1990 Honda Accord DX cranks but no spark. Multiple codes from ECM and flashing"S" light

Perform tests in Sections A and B below:

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

I am having the same problem. Think mine is a problem with the fuel not getting into the carb or some type of fuel problem.