the sponge?
if there's a sponge style "crankcase filter" in our airboxes then .. perhaps i should hit the parts store like now, well.. i guess it's not that much of a rush since it hasn't been in there for the last known 40k miles or so
do you by chance have one of those oiled sponge K&N style drop in airfilters from the prior owner and didn't realize it maybe?
Think of the pvc valve as um..
ok, look at the intake as a vacuum, the bottom side of the pistons as low pressure, top side as high pressure, you don't want the bottom side pressurized or the pistons do more work trying to cycle, plus an engine makes more vacuum at low RPM's than at high RPM's so it works like a valve at higher RPM's so that crankcase pressures don't rise, if the pvc valve sticks open eventually itll foul your plugs up, if it fails closed, thinks like your oil dipstick can blow out (not likely with the hood closed but it happens) and oil can get pushed out of breather hoses
if you got a bunch of engine oil on your air filter your pvc valve is stuck closed, time for a new pvc valve and a airfilter perhaps?
