rnhurt's Garage

Well, I have an oil leak somewhere on the passengers side of the engine.  I changed the spark plugs last weekend and found oil all over the #2 plug - on the outside ceramic.  :(

I knew I had a leak (oil on the garage floor) but not that it was coming from my plug hole.  Anyway, I am running with the belly pan off to see if I can pinpoint the location.  I used some degreaser and cleaned off the bottom but havent gotten to the top of the engine yet.  Anyway, it looks like there is a little oil on the top of the valve cover, so I susspect a valve cover leak. 

There is also a little "valve" or something in-line on a hard hose just above and running parallel to the the passenger side valve cover.  Anyone have any clue as to what this is?  It looks like it might be something to do with the A/C, maybe a check valve or something.