Originally Posted By: WobblyElvis
At idle, air should be pulled into the valve cover. Pull this hose off and put your finger over the valve cover port. You should feel a vacuum within a few seconds. Don't leave you finger there to long or the vacuum will reach the point where it starts pulling air in around the seals on the crankshaft. If there is no vacuum at all, then there is some obstruction in the pcv system. This is not very likely or you would find a lot of oil on the throttle body plate.
If the engine suffers from blow-by past the piston/rings, the oil will turn darker faster than usual and you might find black/carbon/soot in the pleats of the oil filter. A quart of oil every 5,500 miles is not really excessive although a little disconcerting at that mileage.
For a 2007 model it is unlikely that the pcv passage from engine to intake manifold is obstructed but it is possible.
The orifice where crank case gases enter the intake manifold can be seen in this link.
http://www.redlineforums.com/forums/atta...ion-l61_pcv.jpg
I tried that with the port on the valve cover and I don't recall feeling vacuum. The throttle body plate was most clean on the front. The backside and the edges of the body some oily gunk but not a lot of it, just a thin layer. I changed the oil yesterday and the oil filter looked fairly normal, definitely no carbon/soot in the pleats that I could see...
At idle, air should be pulled into the valve cover. Pull this hose off and put your finger over the valve cover port. You should feel a vacuum within a few seconds. Don't leave you finger there to long or the vacuum will reach the point where it starts pulling air in around the seals on the crankshaft. If there is no vacuum at all, then there is some obstruction in the pcv system. This is not very likely or you would find a lot of oil on the throttle body plate.
If the engine suffers from blow-by past the piston/rings, the oil will turn darker faster than usual and you might find black/carbon/soot in the pleats of the oil filter. A quart of oil every 5,500 miles is not really excessive although a little disconcerting at that mileage.
For a 2007 model it is unlikely that the pcv passage from engine to intake manifold is obstructed but it is possible.
The orifice where crank case gases enter the intake manifold can be seen in this link.
http://www.redlineforums.com/forums/atta...ion-l61_pcv.jpg
I tried that with the port on the valve cover and I don't recall feeling vacuum. The throttle body plate was most clean on the front. The backside and the edges of the body some oily gunk but not a lot of it, just a thin layer. I changed the oil yesterday and the oil filter looked fairly normal, definitely no carbon/soot in the pleats that I could see...
