hey , i just bought a civic, 1990 and it has a similar issue, but don't think it is the actual rings, just the rubber rings at the top o the cylnder where the plug wires go in. they look old and worn and on of them is letting a little bit of oil into the cylnder. i was told b a good friend who is also a very good mechanic friend that if you jus swap out those rubber rings, you should be fine. does anyone know ho to do that or where i can get some information for the job? i'm goin to try to do it myself. busyness