This afternoon I removed the oil filler cap to add a snort to the K, and noticed a vaccum in the crankcase.
Granted, I parked it hot, and our weather has turned winter-time cold since I last rode.
I can see where it would be reasonable ... the engine is hot, gases are expanded, and then when it cools, the pressure drops, creating a vaccum inside. But I don't recall ever having such a vaccum in the K100 or the K75.
Is this (vaccum) a normal occurence, or do I need to be nosing around for some type of "issue?"
Thanks in advance,