Gotta 1990 EX with 180K. 5spd. Nice car for my son. he loves it. Yesterday he was driving to work and " all of a sudden the engine started acting funny" so being the mindful kid, he drive it home, and snagged my wifes Jeep.

So I start looking into it and the engine starts and runs but runs rough, sort of like it is missing a cylinder. I added 2 qts oil; I cleaned the plugs, distibutor, changed the plug wires and checked for PCV being clogged. No affect.

Any suggestions on the next try?