Air In Oil ? :( Help Needed

[James200x]

Ok I have been riding my 1983 atc 70 and while it was running I decided to take the oil dipstick out and there is air pumping in there you can feel it.

Is this normal or did I blow a seal or something ?

Thanks

[bad350]

YEAH THATS NORMAL! :bash:

[ATCnut]

normal

[oldorange]

All engines create pressure in the crank case. You just noticed it because you checked the oil while the engine was running I assume.

I know my spelling sucks.

Matt.