Hi there,

I have 91 accord LX that sometimes doesn't start at all. I don't hear any clicks to indicate starter problem when I try to start it. The problem usually occurs in the afternoons. It starts without any problem in the mornings. I tried to check for ECU codes, but I didn't get any codes at all. Could someone please help me figure out what the problem is? I was suspecting bad spark plugs, but not sure. Also, can an old timing belt cause this problem as well? I am not sure when it was changed last. Any help will be greatly appreciated. Thanks.

I would likely replace the main relay and igniter, based on age, mileage, and symptoms described.

Reading sections A and B below should help:

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