I have oil accumulating in 3 of 4 spark plug tubes of my GF's 96 Accord LX. She had this issue about 6 months ago, but I replaced the valve cover seal & seals for plug tubes. Seemed fine for a while, but now I checked the plugs again and they are leaking again.

Is there something else causing the oil in tubes, or didn't I install them right? It was pretty straight forward and seemed like they got a good enough seal when I installed them.

Do I really care that there's a bit of oil in there? The car runs fine and never shows any symptoms that I can tell. The only way I knew there was oil is that I saw it in there.

 

could be the lower spark plug tube seals if you've already replaced the upper ones in the valve cover.

Check the Accord FAQ for a link on how to replace the lower seals.

 

sounds like spark plug tube seals, pull out spark plugs, turn over motor, and put back spark plugs, that should help until you replace the seal

 

I have been driving 3 years now after countless attempts by Honda and myself to repair it. I havent had any issues so far. I have oil in my #2 spark plug tube. I have near perfect fuel economy, so I just dont worry about it.