1990 honda accord will turn overbut wont start

Check what codes are showing first, and try checking fuel delivery and pressure.

I think I would replace the brake light switch.

i have two things that come to mind first of which is your neutral safety switch ...its located on the clutch pedal ..its to prevent the car from being started in gear it may not be working correctly and wont let power to the started when you turn the key...most likely the problem...the other thing if thats not it you may need to check the ignition switch...

The ignition switch is wore out.

Check/replace the crank angle sensor, and maybe the throttle position sensor.

maybe clogged fuel filter of weak fuel pump. and maybe a faulty starter or battery

Main relay located under the left side of the dash behind the coin slot. Should do the trick

you have to replace your ignition, you can't repair that one

Your Starter is Bad. Change it out and you should be Just Fine on Starts.

if you have tried 1 of the many fuel cleaners. it could be your catalytic converter or there could be a crack in your inter cooler