I just got home and checked my engine before starting it and it had a little bit of the grey gunk that happens when water gets mixed with the oil. I checked it out and i can find it on the pvc valve and breather tube but not in the crankcase or anywhere else. could condesation after sitting for a week cause this to happen or do i have a bad pvc valve? ive been having problems with the pvc valve also, it rattles like its suppose to and has plenty of vaccum but i dont think it is working right, how can i tell if it is? thanks