Pablo, good forum for that generation of Accord here
http://www.cb7tuner.com/
Somewhere in there (I haven't posted in a while) I put up a post with Honda TSBs for this vehicle, including one for rough idling. You may want to search.
The spark plugs seals are known to dry out leading to oil in the spark plug wells - you may want to pull the wires and have a look down there. The upper seals are easy to replace (easiest valve cover to remove - four bolts holding it down IIRC), the lower ones not so much. I don't know how you feel about Auto-Rx, but it helped the seals in my car stop leaking.
If you find the vehicle doesn't start when hot, but starts again after a short cooling off period, it's the starter relay, located under the dash. Easy fix (replace) but not the cheapest part, or you could try taking it apart and resoldering the broken solder connections which is the usual cause of the relay not working (something to do with the circuit board expanding when hot and breaking the solder.
If you ever have to replace the front rotors, you'll be left cursing some (hopefully long dead) Honda engineer for having the rotors pressed onto the hub (or some weird similar design).
My Mom had a 1991 EX-R ALB. It ran like a champ with 320000 KM on it. I was using it as an Auto-Rx test mule, but sold it before finishing the test. Pics were posted somewhere on BITOG.
If the wheel wells haven't already rusted out, you should pull off the rubber trim around the well. That trim was the cause of a lot of the rust IMO. Dirt and moisture would get in and could never get out.