I just helped a buddy with his L61 2.2 on his 2005 Cavalier and this could be the same issue (I noticed two of your plugs looked worse than the others):
Very common problem as per the technical service bulletin I sent. Doing some reading, the PCV orifice needs to be cleaned out. Here's a good picture of the dirty orifice and the guy complaining that it plugged up again after 2 weeks:
http://www.ecotecforum.com/forums/showthread.php?14411-2.2-Ecotec-burning-oil-help-with-isolation
Here's a good version of the bulletin with okay pictures. The middle picture with the arrow points to the orifice to clean:
http://www.chevelles.com/forums/showthread.php?t=219091
I'm guess the matching orifice on the head should be cleaned too (small hole between intake ports for cylinder 2 and 3):
http://www.ramscyl.com/images/GM_Ecotec 22.gif
Here's one guy who just opted for a breather instead of tying the valve cover vent tube back to the intake:
http://i92.photobucket.com/albums/l33/rugbyguystu/intake4.jpg
I've heard that guys who do this sometimes can just end up with an oil-bathed engine due to excessive amounts of oil going through the breather. The problem with the breather is that it doesn't fix the root cause of the problem which is the blocked pcv orifice. Leaving the orifice blocked will also foul the spark plugs in cylinders 2 and 3.
http://img155.imageshack.us/img155/1336/1040473.jpg
http://www.gaownersclub.com/forum/showthread.php?t=128116&page=2 (see posting #35)
Very common problem as per the technical service bulletin I sent. Doing some reading, the PCV orifice needs to be cleaned out. Here's a good picture of the dirty orifice and the guy complaining that it plugged up again after 2 weeks:
http://www.ecotecforum.com/forums/showthread.php?14411-2.2-Ecotec-burning-oil-help-with-isolation
Here's a good version of the bulletin with okay pictures. The middle picture with the arrow points to the orifice to clean:
http://www.chevelles.com/forums/showthread.php?t=219091
I'm guess the matching orifice on the head should be cleaned too (small hole between intake ports for cylinder 2 and 3):
http://www.ramscyl.com/images/GM_Ecotec 22.gif
Here's one guy who just opted for a breather instead of tying the valve cover vent tube back to the intake:
http://i92.photobucket.com/albums/l33/rugbyguystu/intake4.jpg
I've heard that guys who do this sometimes can just end up with an oil-bathed engine due to excessive amounts of oil going through the breather. The problem with the breather is that it doesn't fix the root cause of the problem which is the blocked pcv orifice. Leaving the orifice blocked will also foul the spark plugs in cylinders 2 and 3.
http://img155.imageshack.us/img155/1336/1040473.jpg
http://www.gaownersclub.com/forum/showthread.php?t=128116&page=2 (see posting #35)
