Hi everyone, I recently bought a 1992 honda civic with a 1.5L 5 speed, it fires up, cranks a bit, fires up then runs great, then after a while it starts to run like crap after it warms up, it eventually stalls, then it's really hard to start and sometimes won't start until it cools down

 

Last tune up? CEL codes?

 

Sounds like ignition coil to me. Its typical for the coil to fail intermittently when it its hot, when that starts to happen, you don't have long before it fails completely. If its been a long time since you've replaced dizzy cap, rotor, plugs, and wires, or you've never done it, I'd look into replacing those parts, but from your description I'd say its the coil or the plug wires.